Merge the develop branch to the master branch, preparation to v2.0.0

* Add support to disable validator balance check in monitor
* Convert validator address to checksum address

.circleci/config.yml

@@ -11,10 +11,10 @@ orbs:
                 sudo apt-get clean
                 sudo apt-get update
                 sudo apt-get install dpkg
-          - run: 
+          - run:
               name: Install Chrome
               command: |
-                wget -O chrome.deb https://dl.google.com/linux/direct/google-chrome-stable_current_amd64.deb
+                wget -O chrome.deb https://dl.google.com/linux/chrome/deb/pool/main/g/google-chrome-stable/google-chrome-stable_77.0.3865.120-1_amd64.deb
                 sudo dpkg -i chrome.deb
       install-node:
         steps:
@@ -89,29 +89,29 @@ jobs:
       - checkout
       - run: git submodule update --init
       - restore_cache:
-           name: Restore Yarn Package Cache
-           keys:
-             - yarn-{{ checksum "package.json" }}-{{ checksum "yarn.lock" }}
-      - run: git submodule status > submodule.status 
+          name: Restore Yarn Package Cache
+          keys:
+            - yarn-{{ checksum "package.json" }}-{{ checksum "yarn.lock" }}
+      - run: git submodule status > submodule.status
       - restore_cache:
-           name: Restore contracts submodule with compiled contracts
-           keys:
-             - contracts-{{ checksum "submodule.status" }}
+          name: Restore contracts submodule with compiled contracts
+          keys:
+            - contracts-{{ checksum "submodule.status" }}
       - run: yarn install --frozen-lockfile
       - save_cache:
-           name: Save Yarn Package Cache
-           key: yarn-{{ checksum "package.json" }}-{{ checksum "yarn.lock" }}
-           paths:
-             - ~/.cache/yarn
+          name: Save Yarn Package Cache
+          key: yarn-{{ checksum "package.json" }}-{{ checksum "yarn.lock" }}
+          paths:
+            - ~/.cache/yarn
       - run: touch install_deploy.log; test -d contracts/build/contracts || yarn install:deploy &> install_deploy.log
       - store_artifacts:
           path: install_deploy.log
       - run: test -d contracts/build/contracts || yarn compile:contracts
       - save_cache:
-           name: Save contracts submodule with compiled contracts
-           key: contracts-{{ checksum "submodule.status" }}
-           paths:
-             - contracts
+          name: Save contracts submodule with compiled contracts
+          key: contracts-{{ checksum "submodule.status" }}
+          paths:
+            - contracts
       - save_cache:
           name: Save initialized project for subsequent jobs
           key: initialize-{{ .Environment.CIRCLE_SHA1 }}
@@ -143,11 +143,11 @@ jobs:
   oracle-e2e:
     executor: tokenbridge-orb/docker-node
     steps:
-        - checkout
-        - run: git submodule update --init
-        - setup_remote_docker:
-            docker_layer_caching: true
-        - run: yarn run oracle-e2e
+      - checkout
+      - run: git submodule update --init
+      - setup_remote_docker:
+          docker_layer_caching: true
+      - run: yarn run oracle-e2e
   ui-e2e:
     executor: tokenbridge-orb/machine-with-docker-caching
     steps:
@@ -161,9 +161,9 @@ jobs:
   monitor-e2e:
     executor: tokenbridge-orb/machine-with-docker-caching
     steps:
-        - checkout
-        - run: git submodule update --init
-        - run: ./monitor-e2e/run-tests.sh
+      - checkout
+      - run: git submodule update --init
+      - run: ./monitor-e2e/run-tests.sh
   cover:
     executor: tokenbridge-orb/docker-node
     steps:
@@ -194,7 +194,7 @@ jobs:
     steps:
       - checkout
       - run: git submodule update --init
-      - run: 
+      - run:
           name: Run the scenario
           command: deployment-e2e/molecule.sh monitor
           no_output_timeout: 40m
@@ -210,7 +210,15 @@ jobs:
           name: Run the scenario
           command: deployment-e2e/molecule.sh repo
           no_output_timeout: 40m
-      
+  deployment-multiple:
+    executor: tokenbridge-orb/machine-with-docker-caching
+    steps:
+      - checkout
+      - run: git submodule update --init
+      - run:
+          name: Run the scenario
+          command: deployment-e2e/molecule.sh multiple
+          no_output_timeout: 40m
   ultimate:
     executor: tokenbridge-orb/machine-with-docker-caching
     parameters:
@@ -222,6 +230,11 @@ jobs:
         type: string
       ui-e2e-grep:
         description: "Mocha grep string used to run ui-e2e tests specific to given type of bridge"
+        default: ''
+        type: string
+      oracle-e2e-script:
+        description: "Yarn script string used to run oracle-e2e tests specific to given type of bridge"
+        default: ''
         type: string
     steps:
       - checkout
@@ -232,16 +245,24 @@ jobs:
       - tokenbridge-orb/yarn-install-cached-on-machine
       - run:
           name: Prepare the infrastructure
-          command: e2e-commons/up.sh deploy << parameters.scenario-name >>
+          command: e2e-commons/up.sh deploy << parameters.scenario-name >> blocks
           no_output_timeout: 50m
       - tokenbridge-orb/wait-for-oracle:
           redis-key: << parameters.redis-key >>
-      - run:
-          name: Run the ui-e2e tests
-          command: |
-            nvm use default;
-            node ./e2e-commons/scripts/blocks.js &
-            cd ui-e2e; yarn mocha -g "<< parameters.ui-e2e-grep >>" -b ./test.js
+      - when:
+          condition: << parameters.ui-e2e-grep >>
+          steps:
+            - run:
+                name: Run the ui-e2e tests
+                command: |
+                  nvm use default;
+                  cd ui-e2e; yarn mocha -g "<< parameters.ui-e2e-grep >>" -b ./test.js
+      - when:
+          condition: << parameters.oracle-e2e-script >>
+          steps:
+            - run:
+                name: Run the oracle-e2e tests
+                command: cd e2e-commons && docker-compose run e2e yarn workspace oracle-e2e run << parameters.oracle-e2e-script >>
 workflows:
   tokenbridge:
     jobs:
@@ -272,18 +293,24 @@ workflows:
       - deployment-ui
       - deployment-monitor
       - deployment-repo
+      - deployment-multiple
       - ultimate:
-          name: "ultimate: native to erc" 
+          name: "ultimate: native to erc"
           scenario-name: native-to-erc
           redis-key: native-erc-collected-signatures:lastProcessedBlock
           ui-e2e-grep: "NATIVE TO ERC"
       - ultimate:
-          name: "ultimate: erc to native" 
+          name: "ultimate: erc to native"
           scenario-name: erc-to-native
           redis-key: erc-native-collected-signatures:lastProcessedBlock
           ui-e2e-grep: "ERC TO NATIVE"
       - ultimate:
-          name: "ultimate: erc to erc" 
+          name: "ultimate: erc to erc"
           scenario-name: erc-to-erc
           redis-key: erc-erc-collected-signatures:lastProcessedBlock
           ui-e2e-grep: "ERC TO ERC"
+      - ultimate:
+          name: "ultimate: amb"
+          scenario-name: amb
+          redis-key: amb-collected-signatures:lastProcessedBlock
+          oracle-e2e-script: "amb"

CONFIGURATION.md

@@ -69,3 +69,4 @@ MONITOR_VALIDATOR_HOME_TX_LIMIT | Average gas usage of a transaction sent by a v
 MONITOR_VALIDATOR_FOREIGN_TX_LIMIT | Average gas usage of a transaction sent by a validator, it is used to estimate the number of transaction that can be paid by the validator. | integer
 MONITOR_TX_NUMBER_THRESHOLD | If estimated number of transaction is equal to or below this value, the monitor will report that the validator has less funds than it is required. | integer
 MONITOR_PORT | The port for the Monitor. | integer
+MONITOR_BRIDGE_NAME | The name to be used in the url path for the bridge | string

README.md

@@ -66,11 +66,13 @@ Clone the repository:
 git clone https://github.com/poanetwork/tokenbridge
 ```
 
-Initialize submodules, install dependencies, compile the Smart Contracts:
+If there is no need to build docker images for the TokenBridge components (oracle, monitor, UI), initialize submodules, install dependencies, compile the Smart Contracts:
 ```
 yarn initialize
 ```
 
+Then refer to the corresponding README files to get information about particular TokenBridge component.
+
 ## Linting
 
 Running linter for all JS projects:
@@ -106,5 +108,4 @@ This project is licensed under the GNU Lesser General Public License v3.0. See t
 
 ## References
 
-* [Additional Documentation](https://forum.poa.network/c/tokenbridge)
-* [POA20 Bridge FAQ](https://forum.poa.network/c/tokenbridge/poa20-bridge)
+* [TokenBridge Documentation](http://www.tokenbridge.net/)

commons/abis.js

@@ -13,6 +13,7 @@ const REWARDABLE_VALIDATORS_ABI = require('../contracts/build/contracts/Rewardab
 const HOME_AMB_ABI = require('../contracts/build/contracts/HomeAMB').abi
 const FOREIGN_AMB_ABI = require('../contracts/build/contracts/ForeignAMB').abi
 const BOX_ABI = require('../contracts/build/contracts/Box').abi
+const SAI_TOP = require('../contracts/build/contracts/SaiTopMock').abi
 
 const { HOME_V1_ABI, FOREIGN_V1_ABI } = require('./v1Abis')
 const { BRIDGE_MODES } = require('./constants')
@@ -92,5 +93,6 @@ module.exports = {
   ERC20_BYTES32_ABI,
   HOME_AMB_ABI,
   FOREIGN_AMB_ABI,
-  BOX_ABI
+  BOX_ABI,
+  SAI_TOP
 }

deployment-e2e/molecule/monitor/converge.yml

@@ -0,0 +1,3 @@
+---
+- import_playbook: ../../../deployment/site.yml
+- import_playbook: ./run-checks.yml

deployment-e2e/molecule/monitor/molecule.yml

@@ -29,10 +29,11 @@ provisioner:
       r: ["bug"]
   playbooks:
     prepare: ../prepare.yml
-    converge: ../../../deployment/site.yml
+    converge: ./converge.yml
   inventory:
     host_vars:
       monitor-host:
+        MONITOR_PORT: 3003
         syslog_server_port: "udp://127.0.0.1:514"
 verifier:
   name: testinfra

deployment-e2e/molecule/monitor/run-checks.yml

@@ -0,0 +1,7 @@
+---
+- name: Generate initial data for monitor
+  hosts: monitor
+  become: true
+  tasks:
+    - name: Run monitor checks
+      shell: /bin/bash -c 'cd /home/poadocker/bridge/monitor/scripts; ./getBridgeStats.sh >cronWorker.out 2>cronWorker.err'

deployment-e2e/molecule/monitor/tests/test_monitor.py

@@ -34,14 +34,14 @@ def test_logging(host, filename):
 
 def test_home_exists(host):
     assert host.run_test(
-        'curl -s http://localhost:3003 | '
+        'curl -s http://localhost:3003/bridge | '
         'grep -q -i "home"'
     )
 
 
 def test_foreign_exists(host):
     assert host.run_test(
-        'curl -s http://localhost:3003 | '
+        'curl -s http://localhost:3003/bridge | '
         'grep -q -i "foreign"'
     )
 
@@ -49,6 +49,6 @@ def test_foreign_exists(host):
 def test_no_error(host):
     assert host.run_expect(
         [1],
-        'curl -s http://localhost:3003 | '
+        'curl -s http://localhost:3003/bridge | '
         'grep -i -q "error"'
     )

deployment-e2e/molecule/multiple/Dockerfile.j2

@@ -0,0 +1,14 @@
+# Molecule managed
+
+{% if item.registry is defined %}
+FROM {{ item.registry.url }}/{{ item.image }}
+{% else %}
+FROM {{ item.image }}
+{% endif %}
+
+RUN if [ $(command -v apt-get) ]; then apt-get update && apt-get install -y python sudo bash ca-certificates && apt-get clean; \
+    elif [ $(command -v dnf) ]; then dnf makecache && dnf --assumeyes install python sudo python-devel python*-dnf bash && dnf clean all; \
+    elif [ $(command -v yum) ]; then yum makecache fast && yum install -y python sudo yum-plugin-ovl bash && sed -i 's/plugins=0/plugins=1/g' /etc/yum.conf && yum clean all; \
+    elif [ $(command -v zypper) ]; then zypper refresh && zypper install -y python sudo bash python-xml && zypper clean -a; \
+    elif [ $(command -v apk) ]; then apk update && apk add --no-cache python sudo bash ca-certificates; \
+    elif [ $(command -v xbps-install) ]; then xbps-install -Syu && xbps-install -y python sudo bash ca-certificates && xbps-remove -O; fi

deployment-e2e/molecule/multiple/molecule.yml

@@ -0,0 +1,59 @@
+---
+dependency:
+  name: galaxy
+driver:
+  name: docker
+lint:
+  name: yamllint
+  enabled: True
+  options:
+    config-data:
+      ignore: ../../hosts.yml
+platforms:
+  - name: multiple-host
+    groups:
+      - example
+    children:
+      - oracle
+      - monitor
+      - ui
+    image: ubuntu:16.04
+    privileged: true
+    network_mode: host
+    volumes:
+      - /var/run/docker.sock:/var/run/docker.sock
+provisioner:
+  name: ansible
+  lint:
+    name: ansible-lint
+    enabled: True
+    options:
+      r: ["bug"]
+  playbooks:
+    prepare: ../prepare.yml
+    converge: ../monitor/converge.yml
+  inventory:
+    host_vars:
+      multiple-host:
+        ORACLE_VALIDATOR_ADDRESS_PRIVATE_KEY: "8e829f695aed89a154550f30262f1529582cc49dc30eff74a6b491359e0230f9"
+        MONITOR_PORT: 3003
+        syslog_server_port: "udp://127.0.0.1:514"
+verifier:
+  name: testinfra
+  lint:
+    name: flake8
+  additional_files_or_dirs:
+    - ../../tests/*
+scenario:
+  name: multiple
+  test_sequence:
+    - lint
+    - cleanup
+    - destroy
+    - dependency
+    - syntax
+    - create
+    - prepare
+    - converge
+    - verify
+    - destroy

deployment-e2e/molecule/multiple/tests/test_multiple.py

@@ -0,0 +1,32 @@
+import os
+import pytest
+import testinfra.utils.ansible_runner
+
+testinfra_hosts = testinfra.utils.ansible_runner.AnsibleRunner(
+    os.environ['MOLECULE_INVENTORY_FILE']).get_hosts('all')
+
+
+@pytest.mark.parametrize("service", [
+    ("poabridge"),
+    ("tokenbridge-ui"),
+    ("tokenbridge-monitor")
+])
+def test_services(host, service):
+    assert host.service(service).is_enabled
+    assert host.service(service).is_running
+
+
+@pytest.mark.parametrize("name", [
+    ("oracle_rabbit_1"),
+    ("oracle_redis_1"),
+    ("oracle_bridge_request_1"),
+    ("oracle_bridge_collected_1"),
+    ("oracle_bridge_affirmation_1"),
+    ("oracle_bridge_senderhome_1"),
+    ("oracle_bridge_senderforeign_1"),
+    ("ui_ui_1"),
+    ("monitor_monitor_1")
+])
+def test_docker_containers(host, name):
+    container = host.docker(name)
+    assert container.is_running

deployment-e2e/molecule/tests/test_all.py

@@ -9,7 +9,6 @@ testinfra_hosts = testinfra.utils.ansible_runner.AnsibleRunner(
 def test_repo(host):
     assert host.file('/home/poadocker/bridge').exists
     assert host.file('/home/poadocker/bridge').is_directory
-    assert host.file('/home/poadocker/bridge/package.json').exists
 
 
 def test_docker_group(host):

deployment-e2e/molecule/ultimate-amb/Dockerfile.j2

@@ -0,0 +1,14 @@
+# Molecule managed
+
+{% if item.registry is defined %}
+FROM {{ item.registry.url }}/{{ item.image }}
+{% else %}
+FROM {{ item.image }}
+{% endif %}
+
+RUN if [ $(command -v apt-get) ]; then apt-get update && apt-get install -y python sudo bash ca-certificates && apt-get clean; \
+    elif [ $(command -v dnf) ]; then dnf makecache && dnf --assumeyes install python sudo python-devel python*-dnf bash && dnf clean all; \
+    elif [ $(command -v yum) ]; then yum makecache fast && yum install -y python sudo yum-plugin-ovl bash && sed -i 's/plugins=0/plugins=1/g' /etc/yum.conf && yum clean all; \
+    elif [ $(command -v zypper) ]; then zypper refresh && zypper install -y python sudo bash python-xml && zypper clean -a; \
+    elif [ $(command -v apk) ]; then apk update && apk add --no-cache python sudo bash ca-certificates; \
+    elif [ $(command -v xbps-install) ]; then xbps-install -Syu && xbps-install -y python sudo bash ca-certificates && xbps-remove -O; fi

deployment-e2e/molecule/ultimate-amb/molecule.yml

@@ -0,0 +1,40 @@
+---
+driver:
+  name: docker
+platforms:
+  - name: oracle-amb-host
+    groups:
+      - ultimate
+      - amb
+    children:
+      - oracle
+    image: ubuntu:16.04
+    privileged: true
+    network_mode: host
+    volumes:
+      - /var/run/docker.sock:/var/run/docker.sock
+provisioner:
+  name: ansible
+  playbooks:
+    prepare: ../prepare.yml
+    converge: ../ultimate-commons/converge.yml
+  inventory:
+    host_vars:
+      oracle-amb-host:
+        COMMON_HOME_RPC_URL: "http://parity1:8545"
+        COMMON_FOREIGN_RPC_URL: "http://parity2:8545"
+        ORACLE_VALIDATOR_ADDRESS: "0xaaB52d66283F7A1D5978bcFcB55721ACB467384b"
+        ORACLE_VALIDATOR_ADDRESS_PRIVATE_KEY: "8e829f695aed89a154550f30262f1529582cc49dc30eff74a6b491359e0230f9"
+verifier:
+  name: testinfra
+  lint:
+    name: flake8
+scenario:
+  name: ultimate-amb
+  test_sequence:
+    - cleanup
+    - destroy
+    - syntax
+    - create
+    - prepare
+    - converge

deployment-e2e/molecule/ultimate-commons/oracle-add-docker-external-network.yml

@@ -0,0 +1,26 @@
+---
+- name: Slurp docker compose file
+  slurp:
+    src: "/home/poadocker/bridge/oracle/{{ file }}.yml"
+  register: docker_compose_slurp
+- name: Parse docker compose file
+  set_fact:
+    docker_compose_parsed: "{{ docker_compose_slurp['content'] | b64decode | from_yaml }}"
+
+- name: Add the external network used to connect to Parity nodes
+  set_fact:
+    docker_compose_parsed: "{{ docker_compose_parsed |combine({'networks': {'ultimate': {'external': 'true'}}}, recursive=True) }}"
+
+- name: Add all Oracle containers to the network
+  set_fact:
+    docker_compose_parsed: "{{ docker_compose_parsed | combine({'services': {item: {'networks': docker_compose_parsed.services[item].networks | union(['ultimate'])}}}, recursive=True) }}"
+  with_items: "{{ docker_compose_parsed.services }}"
+
+- name: Expose Redis port to allow connecting from redis-cli
+  set_fact:
+    docker_compose_parsed: "{{ docker_compose_parsed | combine({'services': {'redis': {'ports': ['6379:6379']}}}, recursive=True) }}"
+
+- name: Write updated docker file
+  copy:
+    content: "{{ docker_compose_parsed | to_yaml }}"
+    dest: "/home/poadocker/bridge/oracle/{{ file }}.yml"

deployment-e2e/molecule/ultimate-commons/oracle-docker-compose.yml

@@ -5,58 +5,31 @@
   tasks:
   - name: stop the service
     shell: service poabridge stop
-  
-  - name: Slurp docker compose file
-    slurp:
-      src: "/home/poadocker/bridge/oracle/docker-compose.yml"
-    register: docker_compose_slurp
-  - name: Parse docker compose file
-    set_fact:
-      docker_compose_parsed: "{{ docker_compose_slurp['content'] | b64decode | from_yaml }}"
 
-  - name: Add the external network used to connect to Parity nodes
-    set_fact:
-      docker_compose_parsed: "{{ docker_compose_parsed |combine({'networks': {'ultimate': {'external': 'true'}}}, recursive=True) }}"
+  - name: Build current oracle image
+    shell: docker build -t oracle:ultimate-testing --file oracle/Dockerfile .
+    delegate_to: 127.0.0.1
+    become: false
+    args:
+      chdir: "{{ lookup('env', 'PWD') }}/.."
 
-  - name: Add all Oracle containers to the network
-    set_fact:
-      docker_compose_parsed: "{{ docker_compose_parsed | combine({'services': {item: {'networks': docker_compose_parsed.services[item].networks | union(['ultimate'])}}}, recursive=True) }}"
-    with_items: "{{ docker_compose_parsed.services }}"
-  
-  - name: Expose Redis port to allow connecting from redis-cli
-    set_fact:
-      docker_compose_parsed: "{{ docker_compose_parsed | combine({'services': {'redis': {'ports': ['6379:6379']}}}, recursive=True) }}"
+  - name: Replace oracle image
+    replace:
+      path: "/home/poadocker/bridge/oracle/{{ item }}.yml"
+      regexp: 'poanetwork/tokenbridge-oracle:latest'
+      replace: "oracle:ultimate-testing"
+    with_items:
+      - docker-compose
+      - docker-compose-transfer
+      - docker-compose-erc-native
 
-  - name: Write new docker-compose file
-    copy:
-      content: "{{ docker_compose_parsed | to_yaml }}"
-      dest: "/home/poadocker/bridge/oracle/docker-compose.yml"
-
-  - name: Slurp docker compose extended file
-    slurp:
-      src: "/home/poadocker/bridge/oracle/docker-compose-transfer.yml"
-    register: docker_compose_extended_slurp
-  - name: Parse docker compose file
-    set_fact:
-      docker_compose_extended_parsed: "{{ docker_compose_extended_slurp['content'] | b64decode | from_yaml }}"
-
-  - name: Add the external network used to connect to Parity nodes in compose extended file
-    set_fact:
-      docker_compose_extended_parsed: "{{ docker_compose_extended_parsed |combine({'networks': {'ultimate': {'external': 'true'}}}, recursive=True) }}"
-
-  - name: Add all Oracle containers to the network in compose extended file
-    set_fact:
-      docker_compose_extended_parsed: "{{ docker_compose_extended_parsed | combine({'services': {item: {'networks': docker_compose_extended_parsed.services[item].networks | union(['ultimate'])}}}, recursive=True) }}"
-    with_items: "{{ docker_compose_extended_parsed.services }}"
-
-  - name: Expose Redis port to allow connecting from redis-cli in compose extended file
-    set_fact:
-      docker_compose_extended_parsed: "{{ docker_compose_extended_parsed | combine({'services': {'redis': {'ports': ['6379:6379']}}}, recursive=True) }}"
-
-  - name: Write new docker-compose extended file
-    copy:
-      content: "{{ docker_compose_extended_parsed | to_yaml }}"
-      dest: "/home/poadocker/bridge/oracle/docker-compose-transfer.yml"
+  - include_tasks: oracle-add-docker-external-network.yml
+    with_items:
+      - docker-compose
+      - docker-compose-transfer
+      - docker-compose-erc-native
+    loop_control:
+      loop_var: file
 
   - name: start the service
     shell: service poabridge start

deployment/CONFIGURATION.md

@@ -78,6 +78,10 @@ Example config for installing only UI:
    1. Go to the group_vars folder. 
    `cd group_vars`
    2. Note the  <bridge_name> and add it to the hosts.yml configuration. For example, if a bridge file is named sokol-kovan.yml, you would change the <bridge_name> value in hosts.yml to sokol-kovan.
+   
+## Examples
+
+[Deploy a monitor for multiple bridges](./MONITOR.md)
 
 ## Administrator Configurations
 

deployment/MONITOR.md

@@ -0,0 +1,104 @@
+## Deploy multiple bridge monitor on the same host
+
+If you want to deploy a monitor for different bridges, the [monitor variables](../monitor/.env.example) should be configured in `group_vars/<bridge_name>.yml` for each bridge.
+
+For example, let's say we are going to deploy a monitor for xDai bridge and for WETC bridge.
+
+#### Setup ansible configuration for xDai Bridge
+
+First we create `hosts.yml` file to deploy the monitor for xdai bridge
+```yaml
+---
+xdai:
+  children:
+    monitor:
+      hosts:
+        <host_ip_A>:
+          ansible_user: ubuntu
+```
+In `group_vars/xdai.yml`
+```
+---
+MONITOR_BRIDGE_NAME: "xdai"
+MONITOR_PORT: 3003
+
+COMMON_HOME_RPC_URL: "https://dai.poa.network"
+COMMON_HOME_BRIDGE_ADDRESS: "0x7301CFA0e1756B71869E93d4e4Dca5c7d0eb0AA6"
+COMMON_FOREIGN_RPC_URL: "https://mainnet.infura.io/v3/INFURA_KEY"
+COMMON_FOREIGN_BRIDGE_ADDRESS: "0x4aa42145Aa6Ebf72e164C9bBC74fbD3788045016"
+
+COMMON_HOME_GAS_PRICE_FALLBACK: 0
+COMMON_FOREIGN_GAS_PRICE_SUPPLIER_URL: "https://gasprice.poa.network/"
+COMMON_FOREIGN_GAS_PRICE_SPEED_TYPE: "standard"
+COMMON_FOREIGN_GAS_PRICE_FALLBACK: 10000000000
+COMMON_FOREIGN_GAS_PRICE_FACTOR: 1
+
+MONITOR_HOME_START_BLOCK: 759
+MONITOR_FOREIGN_START_BLOCK: 6478417
+MONITOR_VALIDATOR_HOME_TX_LIMIT: 0
+MONITOR_VALIDATOR_FOREIGN_TX_LIMIT: 300000
+MONITOR_TX_NUMBER_THRESHOLD: 100
+```
+
+Run the playbook to deploy the monitor for xdai bridge
+```
+ansible-playbook -i hosts.yml site.yml
+```
+
+This command will deploy the monitor component and enable statistics for xdai bridge.
+
+#### Setup ansible configuration for WETC Bridge
+
+Update `hosts.yml` file to deploy the monitor for WETC Bridge
+```yaml
+---
+wetc:
+  children:
+    monitor:
+      hosts:
+        <host_ip_A>:
+          ansible_user: ubuntu
+```
+
+In `group_vars/wetc.yml`
+```
+---
+MONITOR_BRIDGE_NAME: "wetc"
+
+COMMON_HOME_RPC_URL: "https://ethereumclassic.network"
+COMMON_HOME_BRIDGE_ADDRESS: "0x073081832B4Ecdce79d4D6753565c85Ba4b3BeA9"
+COMMON_FOREIGN_RPC_URL: "https://mainnet.infura.io/v3/32e8e252699a4ac1b5dd5c1ef53cc301"
+COMMON_FOREIGN_BRIDGE_ADDRESS: "0x0cB781EE62F815bdD9CD4c2210aE8600d43e7040"
+
+COMMON_HOME_GAS_PRICE_SUPPLIER_URL: "https://gasprice-etc.poa.network/"
+COMMON_HOME_GAS_PRICE_SPEED_TYPE: "standard"
+COMMON_HOME_GAS_PRICE_FALLBACK: 15000000000
+COMMON_HOME_GAS_PRICE_FACTOR: 1
+
+COMMON_FOREIGN_GAS_PRICE_SUPPLIER_URL: "https://gasprice.poa.network/"
+COMMON_FOREIGN_GAS_PRICE_SPEED_TYPE: "standard"
+COMMON_FOREIGN_GAS_PRICE_FALLBACK: 10000000000
+ORACLE_FOREIGN_GAS_PRICE_UPDATE_INTERVAL: 600000
+COMMON_FOREIGN_GAS_PRICE_FACTOR: 1
+
+MONITOR_HOME_START_BLOCK: 7703292
+MONITOR_FOREIGN_START_BLOCK: 7412459
+MONITOR_VALIDATOR_HOME_TX_LIMIT: 300000
+MONITOR_VALIDATOR_FOREIGN_TX_LIMIT: 300000
+MONITOR_TX_NUMBER_THRESHOLD: 100
+```
+Given that there is a monitor component deployed in the system, the `MONITOR_PORT` variable is not needed.
+
+Run the playbook to deploy the monitor for WETC Bridge
+```
+ansible-playbook -i hosts.yml site.yml
+```
+
+They playbook will detect that the monitor component is already deployed in the system, so it will only generate the configuration needed to enable the WETC Bridge statistics.
+
+##### Get Monitor results
+The monitor output will be available at `http://host_ip_A:MONITOR_PORT/MONITOR_BRIDGE_NAME`.
+
+Given that in `xdai.env` the variable `MONITOR_BRIDGE_NAME` is set to `xdai`, the results are in the url `http://host_ip_A:3003/xdai/`.
+
+Similar to the xdai case, in `wetc.env` the variable `MONITOR_BRIDGE_NAME` is set to `wetc`, so the results are in the url `http://host_ip_A:3003/wetc/`.

deployment/group_vars/amb.yml

@@ -0,0 +1,5 @@
+---
+ORACLE_BRIDGE_MODE: "ARBITRARY_MESSAGE"
+COMMON_HOME_BRIDGE_ADDRESS: "0x0AEe1FCD12dDFab6265F7f8956e6E012A9Fe4Aa0"
+COMMON_FOREIGN_BRIDGE_ADDRESS: "0x0AEe1FCD12dDFab6265F7f8956e6E012A9Fe4Aa0"
+MONITOR_PORT: 3013

deployment/group_vars/dai.yml

@@ -42,6 +42,7 @@ UI_HOME_GAS_PRICE_UPDATE_INTERVAL: 600000
 UI_FOREIGN_GAS_PRICE_UPDATE_INTERVAL: 600000
 
 ## Monitor
+MONITOR_BRIDGE_NAME: "xdai"
 MONITOR_PORT: 3003
 MONITOR_HOME_START_BLOCK: 759
 MONITOR_FOREIGN_START_BLOCK: 6478417

deployment/group_vars/example.yml

@@ -44,9 +44,10 @@ UI_HOME_GAS_PRICE_UPDATE_INTERVAL: 600000
 UI_FOREIGN_GAS_PRICE_UPDATE_INTERVAL: 600000
 
 ## Monitor
+MONITOR_BRIDGE_NAME: "bridge"
 MONITOR_PORT: 3003
 MONITOR_HOME_START_BLOCK: 0
 MONITOR_FOREIGN_START_BLOCK: 0
 MONITOR_VALIDATOR_HOME_TX_LIMIT: 300000
 MONITOR_VALIDATOR_FOREIGN_TX_LIMIT: 300000
-MONITOR_LEFT_TX_THRESHOLD: 100
+MONITOR_TX_NUMBER_THRESHOLD: 100

deployment/group_vars/ultimate.yml

@@ -41,9 +41,10 @@ UI_FOREIGN_EXPLORER_ADDRESS_TEMPLATE: https://blockscout.com/eth/kovan/address/%
 UI_HOME_GAS_PRICE_UPDATE_INTERVAL: 600000
 UI_FOREIGN_GAS_PRICE_UPDATE_INTERVAL: 600000
 
-#montior
+#monitor
+MONITOR_BRIDGE_NAME: "bridge"
 MONITOR_HOME_START_BLOCK: 0
 MONITOR_FOREIGN_START_BLOCK: 0
 MONITOR_VALIDATOR_HOME_TX_LIMIT: 300000
 MONITOR_VALIDATOR_FOREIGN_TX_LIMIT: 300000
-MONITOR_LEFT_TX_THRESHOLD: 100
+MONITOR_TX_NUMBER_THRESHOLD: 100

deployment/group_vars/wetc.yml

@@ -43,6 +43,7 @@ UI_HOME_GAS_PRICE_UPDATE_INTERVAL: 600000
 UI_FOREIGN_GAS_PRICE_UPDATE_INTERVAL: 600000
 
 ## Monitor
+MONITOR_BRIDGE_NAME: "wetc"
 MONITOR_PORT: 3003
 MONITOR_HOME_START_BLOCK: 7703292
 MONITOR_FOREIGN_START_BLOCK: 7412459

deployment/roles/common/tasks/dependencies.yml

@@ -32,6 +32,9 @@
     group: "root"
     mode: "0755"
 
+- name: Upgrade pip version
+  shell: pip3 install --upgrade pip
+
 - name: Install python docker library
   shell: pip3 install docker docker-compose setuptools
 

deployment/roles/common/tasks/main.yml

@@ -1,4 +1,21 @@
 ---
-- include_tasks: dependencies.yml
-- include_tasks: repo.yml
-- include_tasks: logging.yml
+- name: Check if component is already deployed
+  shell: "test -f {{ bridge_path }}/{{ component }}/.env && echo 'true'"
+  ignore_errors: True
+  register: already_deployed
+  when: check_deployed is defined
+
+- name: Set if tasks should be skipped
+  set_fact: skip_task="{{ already_deployed.stdout | default('false') }}"
+
+- name: Include dependencies tasks
+  include_tasks: dependencies.yml
+  when: skip_task != true
+
+- name: Include repo tasks
+  include_tasks: repo.yml
+  when: skip_task != true and skip_repo is undefined
+
+- name: Include logging tasks
+  include_tasks: logging.yml
+  when: skip_task != true

deployment/roles/monitor/meta/main.yml

@@ -1,3 +1,3 @@
 ---
 dependencies:
-  - role: common
+  - { role: common, skip_repo: true, check_deployed: true, component: 'monitor' }

deployment/roles/monitor/tasks/cron.yml

@@ -6,7 +6,7 @@
     day: "{{ monitor_cron_schedule.split(' ')[2] }}"
     month: "{{ monitor_cron_schedule.split(' ')[3] }}"
     weekday: "{{ monitor_cron_schedule.split(' ')[4] }}"
-    job: "/bin/bash -c 'cd {{ bridge_path }}/monitor/scripts; ./checkDocker.sh >cronWorker.out 2>cronWorker.err'"
+    job: "/bin/bash -c 'cd {{ bridge_path }}/monitor/scripts; ./getBridgeStats.sh >cronWorker.out 2>cronWorker.err'"
 - name: Add cron entry
   cron:
     name: "RUN_MONITOR_CHECKS"

deployment/roles/monitor/tasks/jumpbox.yml

@@ -1,5 +1,5 @@
 ---
-- name: Build the containers
-  shell: docker-compose build
+- name: Pull the containers images
+  shell: docker-compose pull
   args:
     chdir: "{{ bridge_path }}/monitor"

deployment/roles/monitor/tasks/main.yml

@@ -1,6 +1,18 @@
 ---
 - include_tasks: pre_config.yml
-- include_tasks: logging.yml
-- include_tasks: jumpbox.yml
-- include_tasks: servinstall.yml
-- include_tasks: cron.yml
+
+- name: Include logging tasks
+  include_tasks: logging.yml
+  when: skip_task != true
+
+- name: Include jumpbox tasks
+  include_tasks: jumpbox.yml
+  when: skip_task != true
+
+- name: Include servinstall tasks
+  include_tasks: servinstall.yml
+  when: skip_task != true
+
+- name: Include cron tasks
+  include_tasks: cron.yml
+  when: skip_task != true

deployment/roles/monitor/tasks/pre_config.yml

@@ -1,5 +1,47 @@
 ---
+- name: Create configs directory
+  file:
+    path: "{{ bridge_path }}/monitor/configs"
+    state: directory
+    mode: '0755'
+  when: skip_task != true
+
+- name: Create responses directory
+  file:
+    path: "{{ bridge_path }}/monitor/responses"
+    state: directory
+    mode: '0755'
+  when: skip_task != true
+
+- name: Create scripts directory
+  file:
+    path: "{{ bridge_path }}/monitor/scripts"
+    state: directory
+    mode: '0755'
+  when: skip_task != true
+
 - name: Install .env config
   template:
     src: .env.j2
     dest: "{{ bridge_path }}/monitor/.env"
+  when: skip_task != true
+
+- name: Copy docker-compose file
+  copy:
+    src: ../../../../monitor/docker-compose.yml
+    dest: "{{ bridge_path }}/monitor/docker-compose.yml"
+    mode: '0755'
+  when: skip_task != true
+
+- name: Copy script file
+  copy:
+    src: ../../../../monitor/scripts/getBridgeStats.sh
+    dest: "{{ bridge_path }}/monitor/scripts/getBridgeStats.sh"
+    owner: "{{ compose_service_user }}"
+    mode: '0755'
+  when: skip_task != true
+
+- name: Install bridge config env
+  template:
+    src: config.env.j2
+    dest: "{{ bridge_path }}/monitor/configs/{{ MONITOR_BRIDGE_NAME }}.env"

deployment/roles/monitor/tasks/servinstall.yml

@@ -1,6 +1,5 @@
 # This role creates a tokenbridge-monitor service which is designed to manage docker-compose monitor deployment.
 # /etc/init.d/tokenbridge-monitor start, status, stop, restart - does what the services usually do in such cases.
-# /etc/init.d/tokenbridge-monitor rebuild - builds a new monitor deployment from scratch.
 ---
 - name: "Set the service"
   template:

deployment/roles/monitor/templates/.env.j2

@@ -1,24 +1 @@
-COMMON_HOME_RPC_URL={{ COMMON_HOME_RPC_URL }}
-COMMON_FOREIGN_RPC_URL={{ COMMON_FOREIGN_RPC_URL }}
-COMMON_HOME_BRIDGE_ADDRESS={{ COMMON_HOME_BRIDGE_ADDRESS }}
-COMMON_FOREIGN_BRIDGE_ADDRESS={{ COMMON_FOREIGN_BRIDGE_ADDRESS }}
-MONITOR_HOME_START_BLOCK={{ MONITOR_HOME_START_BLOCK }}
-MONITOR_FOREIGN_START_BLOCK={{ MONITOR_FOREIGN_START_BLOCK }}
-MONITOR_VALIDATOR_HOME_TX_LIMIT={{ MONITOR_VALIDATOR_HOME_TX_LIMIT }}
-{% if COMMON_HOME_GAS_PRICE_SUPPLIER_URL | default('') != '' %}
-COMMON_HOME_GAS_PRICE_SUPPLIER_URL={{ COMMON_HOME_GAS_PRICE_SUPPLIER_URL }}
-{% endif %}
-{% if COMMON_HOME_GAS_PRICE_SPEED_TYPE | default('') != '' %}
-COMMON_HOME_GAS_PRICE_SPEED_TYPE={{ COMMON_HOME_GAS_PRICE_SPEED_TYPE }}
-{% endif %}
-COMMON_HOME_GAS_PRICE_FALLBACK={{ COMMON_HOME_GAS_PRICE_FALLBACK }}
-{% if COMMON_HOME_GAS_PRICE_FACTOR | default('') != '' %}
-COMMON_HOME_GAS_PRICE_FACTOR={{ COMMON_HOME_GAS_PRICE_FACTOR }}
-{% endif %}
-MONITOR_VALIDATOR_FOREIGN_TX_LIMIT={{ MONITOR_VALIDATOR_FOREIGN_TX_LIMIT }}
-COMMON_FOREIGN_GAS_PRICE_SUPPLIER_URL={{ COMMON_FOREIGN_GAS_PRICE_SUPPLIER_URL }}
-COMMON_FOREIGN_GAS_PRICE_SPEED_TYPE={{ COMMON_FOREIGN_GAS_PRICE_SPEED_TYPE }}
-COMMON_FOREIGN_GAS_PRICE_FALLBACK={{ COMMON_FOREIGN_GAS_PRICE_FALLBACK }}
-COMMON_FOREIGN_GAS_PRICE_FACTOR={{ COMMON_FOREIGN_GAS_PRICE_FACTOR }}
-MONITOR_LEFT_TX_THRESHOLD={{ MONITOR_LEFT_TX_THRESHOLD }}
 MONITOR_PORT={{ MONITOR_PORT }}

deployment/roles/monitor/templates/config.env.j2

@@ -0,0 +1,34 @@
+MONITOR_BRIDGE_NAME={{ MONITOR_BRIDGE_NAME }}
+
+COMMON_HOME_RPC_URL={{ COMMON_HOME_RPC_URL }}
+COMMON_HOME_BRIDGE_ADDRESS={{ COMMON_HOME_BRIDGE_ADDRESS }}
+COMMON_FOREIGN_RPC_URL={{ COMMON_FOREIGN_RPC_URL }}
+COMMON_FOREIGN_BRIDGE_ADDRESS={{ COMMON_FOREIGN_BRIDGE_ADDRESS }}
+
+{% if COMMON_HOME_GAS_PRICE_SUPPLIER_URL | default('') != '' %}
+COMMON_HOME_GAS_PRICE_SUPPLIER_URL={{ COMMON_HOME_GAS_PRICE_SUPPLIER_URL }}
+{% endif %}
+{% if COMMON_HOME_GAS_PRICE_SPEED_TYPE | default('') != '' %}
+COMMON_HOME_GAS_PRICE_SPEED_TYPE={{ COMMON_HOME_GAS_PRICE_SPEED_TYPE }}
+{% endif %}
+COMMON_HOME_GAS_PRICE_FALLBACK={{ COMMON_HOME_GAS_PRICE_FALLBACK }}
+{% if COMMON_HOME_GAS_PRICE_FACTOR | default('') != '' %}
+COMMON_HOME_GAS_PRICE_FACTOR={{ COMMON_HOME_GAS_PRICE_FACTOR }}
+{% endif %}
+
+{% if COMMON_FOREIGN_GAS_PRICE_SUPPLIER_URL | default('') != '' %}
+COMMON_FOREIGN_GAS_PRICE_SUPPLIER_URL={{ COMMON_FOREIGN_GAS_PRICE_SUPPLIER_URL }}
+{% endif %}
+{% if COMMON_FOREIGN_GAS_PRICE_SPEED_TYPE | default('') != '' %}
+COMMON_FOREIGN_GAS_PRICE_SPEED_TYPE={{ COMMON_FOREIGN_GAS_PRICE_SPEED_TYPE }}
+{% endif %}
+COMMON_FOREIGN_GAS_PRICE_FALLBACK={{ COMMON_FOREIGN_GAS_PRICE_FALLBACK }}
+{% if COMMON_FOREIGN_GAS_PRICE_FACTOR | default('') != '' %}
+COMMON_FOREIGN_GAS_PRICE_FACTOR={{ COMMON_FOREIGN_GAS_PRICE_FACTOR }}
+{% endif %}
+
+MONITOR_HOME_START_BLOCK={{ MONITOR_HOME_START_BLOCK }}
+MONITOR_FOREIGN_START_BLOCK={{ MONITOR_FOREIGN_START_BLOCK }}
+MONITOR_VALIDATOR_HOME_TX_LIMIT={{ MONITOR_VALIDATOR_HOME_TX_LIMIT }}
+MONITOR_VALIDATOR_FOREIGN_TX_LIMIT={{ MONITOR_VALIDATOR_FOREIGN_TX_LIMIT }}
+MONITOR_TX_NUMBER_THRESHOLD={{ MONITOR_TX_NUMBER_THRESHOLD }}

deployment/roles/monitor/templates/tokenbridge-monitor.j2

@@ -18,6 +18,7 @@ start(){
     sudo -u "{{ compose_service_user }}" /usr/local/bin/docker-compose  down -v
     sudo -u "{{ compose_service_user }}" /usr/local/bin/docker-compose  rm -fv
     sudo -u "{{ compose_service_user }}" /usr/local/bin/docker-compose  up  --detach
+    sudo -u "{{ compose_service_user }}" /bin/bash -c 'cd scripts; ./getBridgeStats.sh >cronWorker.out 2>cronWorker.err'
 }
 
 stop(){
@@ -33,14 +34,6 @@ status(){
     sudo -u "{{ compose_service_user }}" /usr/local/bin/docker-compose  ps
 }
 
-rebuild(){
-    echo "Rebuild TokenBridge Monitor.."
-    cd $WORKDIR
-    sudo -u "{{ compose_service_user }}" /usr/local/bin/docker-compose  down -v
-    sudo -u "{{ compose_service_user }}" /usr/local/bin/docker-compose  rm -fv
-    sudo -u "{{ compose_service_user }}" /usr/local/bin/docker-compose  up  --detach --force-recreate --no-deps --build
-}
-
 
 case "$1" in
 
@@ -62,12 +55,8 @@ case "$1" in
     start
     ;;
 
-  rebuild)
-    rebuild
-    ;;
-
   *)
-    echo $"Usage: $0 {start|stop|restart|rebuild|status}"
+    echo $"Usage: $0 {start|stop|restart|status}"
     exit 1
     ;;
 

deployment/roles/oracle/meta/main.yml

@@ -1,3 +1,3 @@
 ---
 dependencies:
-  - role: common
+  - { role: common, skip_repo: true }

deployment/roles/oracle/tasks/jumpbox.yml

@@ -1,5 +1,5 @@
 ---
-- name: Build the containers
-  shell: docker-compose build
+- name: Pull the containers images
+  shell: docker-compose pull
   args:
     chdir: "{{ bridge_path }}/oracle"

deployment/roles/oracle/tasks/logging.yml

@@ -1,41 +1,11 @@
 ---
-- name: Slurp docker compose file
-  slurp:
-    src: "{{ bridge_path }}/oracle/docker-compose.yml"
-  register: docker_compose_slurp
-
-- name: Parse docker compose file
-  set_fact:
-    docker_compose_parsed: "{{ docker_compose_slurp['content'] | b64decode | from_yaml }}"
-
-- name: Set logger to remote server
-  set_fact:
-    docker_compose_parsed: "{{ docker_compose_parsed |combine({'services': {item: {'logging': {'driver': 'syslog','options': {'tag': '{{.Name}}/{{.ID}}'}}}}}, recursive=True) }}"
-  with_items: "{{ docker_compose_parsed.services }}"
-
-- name: Write new docker-compose file
-  copy:
-    content: "{{ docker_compose_parsed | to_yaml }}"
-    dest: "{{ bridge_path }}/oracle/docker-compose.yml"
-
-- name: Slurp docker compose extended file
-  slurp:
-    src: "{{ bridge_path }}/oracle/docker-compose-transfer.yml"
-  register: docker_compose_extended_slurp
-
-- name: Parse docker compose extended file
-  set_fact:
-    docker_compose_extended_parsed: "{{ docker_compose_extended_slurp['content'] | b64decode | from_yaml }}"
-
-- name: Set logger to remote server for extended file
-  set_fact:
-    docker_compose_extended_parsed: "{{ docker_compose_extended_parsed |combine({'services': {item: {'logging': {'driver': 'syslog','options': {'tag': '{{.Name}}/{{.ID}}'}}}}}, recursive=True) }}"
-  with_items: "{{ docker_compose_extended_parsed.services }}"
-
-- name: Write new docker-compose-extended file
-  copy:
-    content: "{{ docker_compose_extended_parsed | to_yaml }}"
-    dest: "{{ bridge_path }}/oracle/docker-compose-transfer.yml"
+- include_tasks: logging_by_syslog.yml
+  with_items:
+    - docker-compose
+    - docker-compose-transfer
+    - docker-compose-erc-native
+  loop_control:
+    loop_var: file
 
 - name: Set the local container logs configuration file
   template:

deployment/roles/oracle/tasks/logging_by_syslog.yml

@@ -0,0 +1,19 @@
+---
+- name: Slurp docker compose file
+  slurp:
+    src: "{{ bridge_path }}/oracle/{{ file }}.yml"
+  register: docker_compose_slurp
+
+- name: Parse docker compose file
+  set_fact:
+    docker_compose_parsed: "{{ docker_compose_slurp['content'] | b64decode | from_yaml }}"
+
+- name: Set logger to remote server
+  set_fact:
+    docker_compose_parsed: "{{ docker_compose_parsed |combine({'services': {item: {'logging': {'driver': 'syslog','options': {'tag': '{{.Name}}/{{.ID}}'}}}}}, recursive=True) }}"
+  with_items: "{{ docker_compose_parsed.services }}"
+
+- name: Write updated docker file
+  copy:
+    content: "{{ docker_compose_parsed | to_yaml }}"
+    dest: "{{ bridge_path }}/oracle/{{ file }}.yml"

deployment/roles/oracle/tasks/post_config.yml

@@ -1,7 +1,7 @@
 ---
 - name: Get blocks
   become_user: "{{ compose_service_user }}"
-  shell: docker-compose run --entrypoint "node scripts/getValidatorStartBlocks.js" bridge_affirmation
+  shell: docker-compose run --rm --entrypoint "node scripts/getValidatorStartBlocks.js" bridge_affirmation
   args:
     chdir: "{{ bridge_path }}/oracle"
   register: BLOCKS
@@ -18,7 +18,7 @@
 
 - name: Get validator address
   become_user: "{{ compose_service_user }}"
-  shell: docker-compose run -e ORACLE_VALIDATOR_ADDRESS_PRIVATE_KEY="{{ ORACLE_VALIDATOR_ADDRESS_PRIVATE_KEY }}" --entrypoint "node scripts/privateKeyToAddress.js" bridge_affirmation
+  shell: docker-compose run --rm -e ORACLE_VALIDATOR_ADDRESS_PRIVATE_KEY="{{ ORACLE_VALIDATOR_ADDRESS_PRIVATE_KEY }}" --entrypoint "node scripts/privateKeyToAddress.js" bridge_affirmation
   args:
     chdir: "{{ bridge_path }}/oracle"
   register: VADDRESS
@@ -29,7 +29,7 @@
 
 - name: Get foreign erc type
   become_user: "{{ compose_service_user }}"
-  shell: docker-compose run --entrypoint "node scripts/initialChecks.js" bridge_affirmation
+  shell: docker-compose run --rm --entrypoint "node scripts/initialChecks.js" bridge_affirmation
   args:
     chdir: "{{ bridge_path }}/oracle"
   register: ERCTYPE
@@ -40,7 +40,11 @@
 
 - name: Extend docker compose file
   set_fact: composefileoverride="-f docker-compose-transfer.yml"
-  when: ORACLE_BRIDGE_MODE == "ERC_TO_NATIVE" or ( ORACLE_BRIDGE_MODE == "ERC_TO_ERC" and FOREIGN_ERC_TYPE != "ERC677")
+  when: ORACLE_BRIDGE_MODE == "ERC_TO_ERC" and FOREIGN_ERC_TYPE != "ERC677"
+
+- name: Extend docker compose file for erc to native
+  set_fact: composefileoverride="-f docker-compose-erc-native.yml"
+  when: ORACLE_BRIDGE_MODE == "ERC_TO_NATIVE"
 
 - name: Install .key config
   template:

deployment/roles/oracle/tasks/pre_config.yml

@@ -1,5 +1,21 @@
 ---
+- name: Create oracle directory
+  file:
+    path: "{{ bridge_path }}/oracle"
+    state: directory
+    mode: '0755'
+
 - name: Install .env config
   template:
     src: .env.j2
     dest: "{{ bridge_path }}/oracle/.env"
+
+- name: Copy docker-compose files
+  copy:
+    src: ../../../../oracle/{{ item }}
+    dest: "{{ bridge_path }}/oracle/"
+    mode: '0755'
+  with_items:
+    - docker-compose.yml
+    - docker-compose-transfer.yml
+    - docker-compose-erc-native.yml

deployment/roles/oracle/tasks/servinstall.yml

@@ -1,6 +1,5 @@
 # This role creates a poabridge service which is designed to manage docker-compose bridge deployment.
 # /etc/init.d/poabridge start, status, stop, restart - does what the services usually do in such cases.
-# /etc/init.d/poabridge rebuild - builds a new bridge deployment from scratch.
 ---
 - name: "Set poabridge service"
   template:

deployment/roles/oracle/templates/poabridge.j2

@@ -52,14 +52,6 @@ status(){
     sudo -u "{{ compose_service_user }}" /usr/local/bin/docker-compose $composefileoverride  ps
 }
 
-rebuild(){
-    echo "Rebuild bridge.."
-    cd $WORKDIR
-    sudo -u "{{ compose_service_user }}" /usr/local/bin/docker-compose $composefileoverride down -v
-    sudo -u "{{ compose_service_user }}" /usr/local/bin/docker-compose $composefileoverride rm -fv
-    sudo -u "{{ compose_service_user }}" ORACLE_VALIDATOR_ADDRESS=$vaddr ORACLE_VALIDATOR_ADDRESS_PRIVATE_KEY=$vkey /usr/local/bin/docker-compose $composefileoverride up --detach --force-recreate --no-deps --build
-}
-
 
 case "$1" in
 
@@ -81,12 +73,8 @@ case "$1" in
     start
     ;;
 
-  rebuild)
-    rebuild
-    ;;
-
   *)
-    echo $"Usage: $0 {start|stop|restart|rebuild|status}"
+    echo $"Usage: $0 {start|stop|restart|status}"
     exit 1
     ;;
 

e2e-commons/components-envs/monitor-amb.env

@@ -16,3 +16,4 @@ COMMON_FOREIGN_GAS_PRICE_FALLBACK=1000000000
 COMMON_FOREIGN_GAS_PRICE_FACTOR=1
 MONITOR_TX_NUMBER_THRESHOLD=100
 MONITOR_PORT=3013
+MONITOR_BRIDGE_NAME=bridge

e2e-commons/components-envs/monitor-erc20-native.env

@@ -16,3 +16,4 @@ COMMON_FOREIGN_GAS_PRICE_FALLBACK=1000000000
 COMMON_FOREIGN_GAS_PRICE_FACTOR=1
 MONITOR_TX_NUMBER_THRESHOLD=100
 MONITOR_PORT=3012
+MONITOR_BRIDGE_NAME=bridge

e2e-commons/components-envs/monitor-erc20.env

@@ -16,3 +16,4 @@ COMMON_FOREIGN_GAS_PRICE_FALLBACK=1000000000
 COMMON_FOREIGN_GAS_PRICE_FACTOR=1
 MONITOR_TX_NUMBER_THRESHOLD=100
 MONITOR_PORT=3011
+MONITOR_BRIDGE_NAME=bridge

e2e-commons/components-envs/monitor.env

@@ -16,3 +16,4 @@ COMMON_FOREIGN_GAS_PRICE_FALLBACK=1000000000
 COMMON_FOREIGN_GAS_PRICE_FACTOR=1
 MONITOR_TX_NUMBER_THRESHOLD=100
 MONITOR_PORT=3010
+MONITOR_BRIDGE_NAME=bridge

e2e-commons/constants.json

@@ -7,10 +7,26 @@
     "address": "0xcca2fb44C8C36E51f743269d6F484Fd027B9F9Aa",
     "privateKey": "0xcf954e07e6a439faf392eb474e95ddb444c2ca444847f2ad6ecc79e1a585e2b8"
   },
+  "thirdUser": {
+    "address": "0x441cc8537aB6cE63d060b63F3A44eE021d62e6cF",
+    "privateKey": "0xd3915199f27691d7784cb01ab0c7220308053b229f95d592e97493326314a8d0"
+  },
+  "fourthUser": {
+    "address": "0x3CC5baAB679eC0732C175760079Bf48F564ad26B",
+    "privateKey": "0xedb53ee050631b7914d5f1a66c2f0d2df3ec85a9ed2a9616b16a7b1b7a10b8d1"
+  },
   "validator": {
     "address": "0xaaB52d66283F7A1D5978bcFcB55721ACB467384b",
     "privateKey": "0x8e829f695aed89a154550f30262f1529582cc49dc30eff74a6b491359e0230f9"
   },
+  "secondValidator": {
+    "address": "0xdCC784657C78054aa61FbcFFd2605F32374816A4",
+    "privateKey": "0x5a5c3645d0f04e9eb4f27f94ed4c244a225587405b8838e7456f7781ce3a9513"
+  },
+  "thirdValidator": {
+    "address": "0xDcef88209a20D52165230104B245803C3269454d",
+    "privateKey": "0xf877f62a1c19f852cff1d29f0fb1ecac18821c0080d4cc0520c60c098293dca1"
+  },
   "blockGenerator": {
     "address": "0xB4579fd5AfEaB60B03Db3F408AAdD315035943f7",
     "privateKey": "0xd6143d390d8b28c33601bb0fe29392fb1c35c24ccfe8722c09c2bdd6ada2699f"
@@ -20,7 +36,7 @@
     "foreign": "0x2B6871b9B02F73fa24F4864322CdC78604207769",
     "foreignToken": "0xdbeE25CbE97e4A5CC6c499875774dc7067E9426B",
     "ui": "http://localhost:3000",
-    "monitor": "http://monitor:3010"
+    "monitor": "http://monitor:3010/bridge"
   },
   "ercToErcBridge": {
     "home": "0x1feB40aD9420b186F019A717c37f5546165d411E",
@@ -28,21 +44,24 @@
     "homeToken": "0x792455a6bCb62Ed4C4362D323E0590654CA4765c",
     "foreignToken": "0x3C665A31199694Bf723fD08844AD290207B5797f",
     "ui": "http://localhost:3001",
-    "monitor": "http://monitor-erc20:3011"
+    "monitor": "http://monitor-erc20:3011/bridge"
   },
   "ercToNativeBridge": {
     "home": "0x488Af810997eD1730cB3a3918cD83b3216E6eAda",
     "foreign": "0x488Af810997eD1730cB3a3918cD83b3216E6eAda",
-    "foreignToken": "0x3C665A31199694Bf723fD08844AD290207B5797f",
+    "foreignToken": "0x7cc4b1851c35959d34e635a470f6b5c43ba3c9c9",
+    "halfDuplexToken": "0x89d24A6b4CcB1B6fAA2625fE562bDD9a23260359",
+    "saiTop": "0x9b0ccf7C8994E19F39b2B4CF708e0A7DF65fA8a3",
+    "chaiToken": "0x06af07097c9eeb7fd685c692751d5c66db49c215",
     "ui": "http://localhost:3002",
-    "monitor": "http://monitor-erc20-native:3012"
+    "monitor": "http://monitor-erc20-native:3012/bridge"
   },
   "amb": {
     "home": "0x0AEe1FCD12dDFab6265F7f8956e6E012A9Fe4Aa0",
     "foreign": "0x0AEe1FCD12dDFab6265F7f8956e6E012A9Fe4Aa0",
     "homeBox": "0x6C4EaAb8756d53Bf599FFe2347FAFF1123D6C8A1",
     "foreignBox": "0x6C4EaAb8756d53Bf599FFe2347FAFF1123D6C8A1",
-    "monitor": "http://monitor-amb:3013"
+    "monitor": "http://monitor-amb:3013/bridge"
   },
   "homeRPC": {
     "URL": "http://parity1:8545",

e2e-commons/contracts-envs/amb.env

@@ -22,4 +22,4 @@ FOREIGN_REQUIRED_BLOCK_CONFIRMATIONS=1
 FOREIGN_GAS_PRICE=10000000000
 
 REQUIRED_NUMBER_OF_VALIDATORS=1
-VALIDATORS=0xaaB52d66283F7A1D5978bcFcB55721ACB467384b
+VALIDATORS="0xaaB52d66283F7A1D5978bcFcB55721ACB467384b 0xdCC784657C78054aa61FbcFFd2605F32374816A4 0xDcef88209a20D52165230104B245803C3269454d"

e2e-commons/contracts-envs/erc-to-erc.env

@@ -34,8 +34,7 @@ FOREIGN_REWARDABLE=false
 ERC20_TOKEN_ADDRESS=0x3C665A31199694Bf723fD08844AD290207B5797f
 
 REQUIRED_NUMBER_OF_VALIDATORS=1
-VALIDATORS="0xaaB52d66283F7A1D5978bcFcB55721ACB467384b"
-VALIDATORS_REWARD_ACCOUNTS=0x0000000000000000000000000000000000000000
+VALIDATORS="0xaaB52d66283F7A1D5978bcFcB55721ACB467384b 0xdCC784657C78054aa61FbcFFd2605F32374816A4 0xDcef88209a20D52165230104B245803C3269454d"
 BLOCK_REWARD_ADDRESS=0x0000000000000000000000000000000000000000
 DPOS_STAKING_ADDRESS=0x0000000000000000000000000000000000000000
 ERC20_EXTENDED_BY_ERC677=false

e2e-commons/contracts-envs/erc-to-native.env

@@ -32,8 +32,7 @@ FOREIGN_GAS_PRICE=10000000000
 FOREIGN_REWARDABLE=false
 
 BLOCK_REWARD_ADDRESS=0xF9698Eb93702dfdd0e2d802088d4c21822a8A977
-ERC20_TOKEN_ADDRESS=0x3C665A31199694Bf723fD08844AD290207B5797f
+ERC20_TOKEN_ADDRESS=0x89d24A6b4CcB1B6fAA2625fE562bDD9a23260359
 
 REQUIRED_NUMBER_OF_VALIDATORS=1
-VALIDATORS="0xaaB52d66283F7A1D5978bcFcB55721ACB467384b"
-VALIDATORS_REWARD_ACCOUNTS=0x0000000000000000000000000000000000000000
+VALIDATORS="0xaaB52d66283F7A1D5978bcFcB55721ACB467384b 0xdCC784657C78054aa61FbcFFd2605F32374816A4 0xDcef88209a20D52165230104B245803C3269454d"

e2e-commons/contracts-envs/native-to-erc.env

@@ -34,6 +34,5 @@ FOREIGN_GAS_PRICE=10000000000
 FOREIGN_REWARDABLE=false
 
 REQUIRED_NUMBER_OF_VALIDATORS=1
-VALIDATORS="0xaaB52d66283F7A1D5978bcFcB55721ACB467384b"
-VALIDATORS_REWARD_ACCOUNTS=0x0000000000000000000000000000000000000000
+VALIDATORS="0xaaB52d66283F7A1D5978bcFcB55721ACB467384b 0xdCC784657C78054aa61FbcFFd2605F32374816A4 0xDcef88209a20D52165230104B245803C3269454d"
 BLOCK_REWARD_ADDRESS=0x0000000000000000000000000000000000000000

e2e-commons/docker-compose.yml

@@ -24,16 +24,13 @@ services:
       - ultimate
   rabbit:
     image: "rabbitmq:3-management"
-    ports:
-    - "15672:15672"
     networks:
       - ultimate
   oracle:
     build:
       context: ..
       dockerfile: oracle/Dockerfile
-      args:
-        DOT_ENV_PATH: e2e-commons/components-envs/oracle.env
+    env_file: ../e2e-commons/components-envs/oracle.env
     environment:
     - NODE_ENV=production
     command: "true"
@@ -43,8 +40,7 @@ services:
     build:
       context: ..
       dockerfile: oracle/Dockerfile
-      args:
-        DOT_ENV_PATH: e2e-commons/components-envs/oracle-erc20.env
+    env_file: ../e2e-commons/components-envs/oracle-erc20.env
     environment:
     - NODE_ENV=production
     command: "true"
@@ -54,8 +50,7 @@ services:
     build:
       context: ..
       dockerfile: oracle/Dockerfile
-      args:
-        DOT_ENV_PATH: e2e-commons/components-envs/oracle-erc20-native.env
+    env_file: ../e2e-commons/components-envs/oracle-erc20-native.env
     environment:
     - NODE_ENV=production
     command: "true"
@@ -65,8 +60,7 @@ services:
     build:
       context: ..
       dockerfile: oracle/Dockerfile
-      args:
-        DOT_ENV_PATH: e2e-commons/components-envs/oracle-amb.env
+    env_file: ../e2e-commons/components-envs/oracle-amb.env
     environment:
     - NODE_ENV=production
     command: "true"
@@ -103,8 +97,7 @@ services:
     build:
       context: ..
       dockerfile: monitor/Dockerfile
-      args:
-        DOT_ENV_PATH: e2e-commons/components-envs/monitor.env
+    env_file: ../e2e-commons/components-envs/monitor.env
     entrypoint: yarn check-and-start
     ports:
       - "3010:3010"
@@ -114,8 +107,7 @@ services:
     build:
       context: ..
       dockerfile: monitor/Dockerfile
-      args:
-        DOT_ENV_PATH: e2e-commons/components-envs/monitor-erc20.env
+    env_file: ../e2e-commons/components-envs/monitor-erc20.env
     entrypoint: yarn check-and-start
     ports:
       - "3011:3011"
@@ -125,8 +117,7 @@ services:
     build:
       context: ..
       dockerfile: monitor/Dockerfile
-      args:
-        DOT_ENV_PATH: e2e-commons/components-envs/monitor-erc20-native.env
+    env_file: ../e2e-commons/components-envs/monitor-erc20-native.env
     entrypoint: yarn check-and-start
     ports:
       - "3012:3012"
@@ -136,8 +127,7 @@ services:
     build:
       context: ..
       dockerfile: monitor/Dockerfile
-      args:
-        DOT_ENV_PATH: e2e-commons/components-envs/monitor-amb.env
+    env_file: ../e2e-commons/components-envs/monitor-amb.env
     entrypoint: yarn check-and-start
     ports:
       - "3013:3013"
@@ -150,3 +140,10 @@ services:
     command: "true"
     networks:
       - ultimate
+  blocks:
+    build:
+      context: ..
+      dockerfile: Dockerfile.e2e
+    entrypoint: node e2e-commons/scripts/blocks.js
+    networks:
+      - ultimate

e2e-commons/down.sh

@@ -5,4 +5,6 @@ if [ $CI ]; then exit $rc; fi
 
 ps | grep node | grep -v grep | awk '{print "kill " $1}' | /bin/bash
 docker-compose down
+docker-compose -p validator2 down
+docker-compose -p validator3 down
 docker network rm ultimate || true

e2e-commons/scripts/blocks.js

@@ -1,8 +1,7 @@
 const Web3 = require('web3')
-const { generateNewBlock } = require('../utils')
 
-const homeWeb3 = new Web3(new Web3.providers.HttpProvider('http://localhost:8541'))
-const foreignWeb3 = new Web3(new Web3.providers.HttpProvider('http://localhost:8542'))
+const homeWeb3 = new Web3(new Web3.providers.HttpProvider('http://parity1:8545'))
+const foreignWeb3 = new Web3(new Web3.providers.HttpProvider('http://parity2:8545'))
 const {user, blockGenerator} = require('../constants.json');
 
 homeWeb3.eth.accounts.wallet.add(user.privateKey)
@@ -10,10 +9,24 @@ foreignWeb3.eth.accounts.wallet.add(user.privateKey)
 homeWeb3.eth.accounts.wallet.add(blockGenerator.privateKey)
 foreignWeb3.eth.accounts.wallet.add(blockGenerator.privateKey)
 
+function generateNewBlock(web3, address) {
+  return web3.eth.sendTransaction({
+    from: address,
+    to: '0x0000000000000000000000000000000000000000',
+    gasPrice: '1',
+    gas: '21000',
+    value: '1'
+  })
+}
+
 function main() {
   setTimeout(async () => {
-    generateNewBlock(homeWeb3, blockGenerator.address)
-    generateNewBlock(foreignWeb3, blockGenerator.address)
+    try {
+      generateNewBlock(homeWeb3, blockGenerator.address)
+    } catch {} // in case of Transaction with the same hash was already imported.
+    try {
+      generateNewBlock(foreignWeb3, blockGenerator.address)
+    } catch {} // in case of Transaction with the same hash was already imported.
     main()
   }, 1000)
 }

e2e-commons/scripts/deploy.sh

@@ -6,6 +6,9 @@ CONTRACTS_PATH="../../contracts"
 DEPLOY_PATH="$CONTRACTS_PATH/deploy"
 ENVS_PATH="../contracts-envs"
 
+# mock bridge validators contract with the one with deterministic isValidatorDuty
+mv "$CONTRACTS_PATH/build/contracts/BridgeValidatorsDeterministic.json" "$CONTRACTS_PATH/build/contracts/BridgeValidators.json"
+
 echo -e "\n\n############ Deploying native-to-erc ############\n"
 cp "$ENVS_PATH/native-to-erc.env" "$DEPLOY_PATH/.env"
 cd "$DEPLOY_PATH"

e2e-commons/up.sh

@@ -7,6 +7,30 @@ docker-compose build
 docker network create --driver bridge ultimate || true
 docker-compose up -d parity1 parity2 e2e
 
+startValidator () {
+    docker-compose $1 run -d --name $4 redis
+    docker-compose $1 run -d --name $5 rabbit
+    docker-compose $1 run $2 $3 -d oracle yarn watcher:signature-request
+    docker-compose $1 run $2 $3 -d oracle yarn watcher:collected-signatures
+    docker-compose $1 run $2 $3 -d oracle yarn watcher:affirmation-request
+    docker-compose $1 run $2 $3 -d oracle-erc20 yarn watcher:signature-request
+    docker-compose $1 run $2 $3 -d oracle-erc20 yarn watcher:collected-signatures
+    docker-compose $1 run $2 $3 -d oracle-erc20 yarn watcher:affirmation-request
+    docker-compose $1 run $2 $3 -d oracle-erc20 yarn watcher:transfer
+    docker-compose $1 run $2 $3 -d oracle-erc20-native yarn watcher:signature-request
+    docker-compose $1 run $2 $3 -d oracle-erc20-native yarn watcher:collected-signatures
+    docker-compose $1 run $2 $3 -d oracle-erc20-native yarn watcher:affirmation-request
+    docker-compose $1 run $2 $3 -d oracle-erc20-native yarn watcher:transfer
+    docker-compose $1 run $2 $3 -d oracle-erc20-native yarn watcher:half-duplex-transfer
+    docker-compose $1 run $2 $3 -d oracle-erc20-native yarn worker:swap-tokens
+    docker-compose $1 run $2 $3 -d oracle-erc20-native yarn worker:convert-to-chai
+    docker-compose $1 run $2 $3 -d oracle-amb yarn watcher:signature-request
+    docker-compose $1 run $2 $3 -d oracle-amb yarn watcher:collected-signatures
+    docker-compose $1 run $2 $3 -d oracle-amb yarn watcher:affirmation-request
+    docker-compose $1 run $2 $3 -d oracle-erc20-native yarn sender:home
+    docker-compose $1 run $2 $3 -d oracle-erc20-native yarn sender:foreign
+}
+
 while [ "$1" != "" ]; do
   if [ "$1" == "oracle" ]; then
     docker-compose up -d redis rabbit oracle oracle-erc20 oracle-erc20-native oracle-amb
@@ -22,6 +46,9 @@ while [ "$1" != "" ]; do
     docker-compose run -d oracle-erc20-native yarn watcher:collected-signatures
     docker-compose run -d oracle-erc20-native yarn watcher:affirmation-request
     docker-compose run -d oracle-erc20-native yarn watcher:transfer
+    docker-compose run -d oracle-erc20-native yarn watcher:half-duplex-transfer
+    docker-compose run -d oracle-erc20-native yarn worker:swap-tokens
+    docker-compose run -d oracle-erc20-native yarn worker:convert-to-chai
     docker-compose run -d oracle-amb yarn watcher:signature-request
     docker-compose run -d oracle-amb yarn watcher:collected-signatures
     docker-compose run -d oracle-amb yarn watcher:affirmation-request
@@ -29,6 +56,20 @@ while [ "$1" != "" ]; do
     docker-compose run -d oracle yarn sender:foreign
   fi
 
+  if [ "$1" == "oracle-validator-2" ]; then
+    oracle2name="-p validator2"
+    oracle2Values="-e ORACLE_VALIDATOR_ADDRESS=0xdCC784657C78054aa61FbcFFd2605F32374816A4 -e ORACLE_VALIDATOR_ADDRESS_PRIVATE_KEY=5a5c3645d0f04e9eb4f27f94ed4c244a225587405b8838e7456f7781ce3a9513"
+    oracle2comp="-e ORACLE_QUEUE_URL=amqp://rabbit2 -e ORACLE_REDIS_URL=redis://redis2"
+    startValidator "$oracle2name" "$oracle2Values" "$oracle2comp" "redis2" "rabbit2"
+  fi
+
+  if [ "$1" == "oracle-validator-3" ]; then
+    oracle3name="-p validator3"
+    oracle3Values="-e ORACLE_VALIDATOR_ADDRESS=0xDcef88209a20D52165230104B245803C3269454d -e ORACLE_VALIDATOR_ADDRESS_PRIVATE_KEY=f877f62a1c19f852cff1d29f0fb1ecac18821c0080d4cc0520c60c098293dca1"
+    oracle3comp="-e ORACLE_QUEUE_URL=amqp://rabbit3 -e ORACLE_REDIS_URL=redis://redis3"
+    startValidator "$oracle3name" "$oracle3Values" "$oracle3comp" "redis3" "rabbit3"
+  fi
+
   if [ "$1" == "ui" ]; then
     docker-compose up -d ui ui-erc20 ui-erc20-native
 
@@ -42,7 +83,7 @@ while [ "$1" != "" ]; do
   fi
 
   if [ "$1" == "blocks" ]; then
-    node ./scripts/blocks.js &
+    docker-compose up -d blocks
   fi
 
   if [ "$1" == "monitor" ]; then
@@ -61,5 +102,9 @@ while [ "$1" != "" ]; do
     ../deployment-e2e/molecule.sh ultimate-erc-to-erc
   fi
 
+  if [ "$1" == "amb" ]; then
+    ../deployment-e2e/molecule.sh ultimate-amb
+  fi
+
   shift # Shift all the parameters down by one
 done

e2e-commons/utils.js

@@ -1,13 +1,18 @@
-function generateNewBlock(web3, address) {
-  return web3.eth.sendTransaction({
-    from: address,
-    to: '0x0000000000000000000000000000000000000000',
-    gasPrice: '1',
-    gas: '21000',
-    value: '1'
+const promiseRetry = require('promise-retry')
+
+async function uniformRetry(f) {
+  return promiseRetry(f, {
+    forever: true,
+    factor: 1,
+    minTimeout: 500
   })
 }
 
-module.exports = {
-  generateNewBlock
+async function sleep(timeout) {
+  return new Promise(res => setTimeout(res, timeout))
+}
+
+module.exports = {
+  uniformRetry,
+  sleep
 }

monitor-e2e/run-tests.sh

@@ -1,6 +1,6 @@
 cd $(dirname $0)
 
-../e2e-commons/up.sh deploy monitor
+../e2e-commons/up.sh deploy blocks monitor
 
 ./wait-for-monitor.sh
 nohup ./periodically-check-all.sh < /dev/null > /dev/null 2>&1 &

monitor-e2e/test/ercToNative.js

@@ -1,7 +1,15 @@
 const assert = require('assert')
 const axios = require('axios')
 const { ercToNativeBridge, user, foreignRPC, validator } = require('../../e2e-commons/constants.json')
-const { waitUntil, sendTokens, addValidator } = require('../utils')
+const {
+  waitUntil,
+  sendTokens,
+  addValidator,
+  initializeChaiToken,
+  convertDaiToChai,
+  setMinDaiTokenBalance,
+  migrateToMCD
+} = require('../utils')
 
 const baseUrl = ercToNativeBridge.monitor
 
@@ -24,12 +32,45 @@ describe('ERC TO NATIVE with changing state of contracts', () => {
     assert((await axios.get(`${baseUrl}/validators`)).data.validatorsMatch === true)
   })
 
-  it('should change balanceDiff', async () => {
-    await sendTokens(foreignRPC.URL, user, ercToNativeBridge.foreignToken, ercToNativeBridge.foreign)
+  it('should change balanceDiff', async function() {
+    this.timeout(60000)
+    await sendTokens(foreignRPC.URL, user, ercToNativeBridge.halfDuplexToken, ercToNativeBridge.foreign)
 
     await waitUntil(async () => {
       ;({ data } = await axios.get(`${baseUrl}`))
-      return data.balanceDiff !== 0
+      const { erc20Balance, halfDuplexErc20Balance, investedErc20Balance } = data.foreign
+      return (
+        data.balanceDiff === 0.01 &&
+        erc20Balance === '0.01' &&
+        halfDuplexErc20Balance === undefined &&
+        investedErc20Balance === undefined
+      )
+    })
+
+    await migrateToMCD(foreignRPC.URL, ercToNativeBridge.foreign)
+
+    await waitUntil(async () => {
+      ;({ data } = await axios.get(`${baseUrl}`))
+      const { erc20Balance, halfDuplexErc20Balance, investedErc20Balance } = data.foreign
+      return (
+        data.balanceDiff === 0.01 &&
+        erc20Balance === '0.01' &&
+        halfDuplexErc20Balance === '0' &&
+        investedErc20Balance === undefined
+      )
+    })
+
+    await sendTokens(foreignRPC.URL, user, ercToNativeBridge.halfDuplexToken, ercToNativeBridge.foreign)
+
+    await waitUntil(async () => {
+      ;({ data } = await axios.get(`${baseUrl}`))
+      const { erc20Balance, halfDuplexErc20Balance, investedErc20Balance } = data.foreign
+      return (
+        data.balanceDiff === 0.02 &&
+        erc20Balance === '0.01' &&
+        halfDuplexErc20Balance === '0.01' &&
+        investedErc20Balance === undefined
+      )
     })
   })
 
@@ -40,4 +81,52 @@ describe('ERC TO NATIVE with changing state of contracts', () => {
       return data.validatorsMatch === false
     })
   })
+
+  it('should consider chai token balance', async function() {
+    this.timeout(60000)
+    await initializeChaiToken(foreignRPC.URL, ercToNativeBridge.foreign)
+    await sendTokens(foreignRPC.URL, user, ercToNativeBridge.foreignToken, ercToNativeBridge.foreign)
+
+    await waitUntil(async () => {
+      ;({ data } = await axios.get(`${baseUrl}`))
+      const { erc20Balance, halfDuplexErc20Balance, investedErc20Balance, accumulatedInterest } = data.foreign
+      return (
+        data.balanceDiff === 0.03 &&
+        erc20Balance === '0.02' &&
+        halfDuplexErc20Balance === '0.01' &&
+        investedErc20Balance === '0' &&
+        accumulatedInterest === '0.001' // value of dsrBalance() is initially defined in genesis block as 0.001
+      )
+    })
+
+    await setMinDaiTokenBalance(foreignRPC.URL, ercToNativeBridge.foreign, '0.01')
+    await convertDaiToChai(foreignRPC.URL, ercToNativeBridge.foreign)
+
+    await waitUntil(async () => {
+      ;({ data } = await axios.get(`${baseUrl}`))
+      const { erc20Balance, halfDuplexErc20Balance, investedErc20Balance, accumulatedInterest } = data.foreign
+      return (
+        data.balanceDiff === 0.03 &&
+        erc20Balance === '0.01' &&
+        halfDuplexErc20Balance === '0.01' &&
+        investedErc20Balance === '0.01' &&
+        accumulatedInterest === '0.001'
+      )
+    })
+
+    await setMinDaiTokenBalance(foreignRPC.URL, ercToNativeBridge.foreign, '0.005')
+    await convertDaiToChai(foreignRPC.URL, ercToNativeBridge.foreign)
+
+    await waitUntil(async () => {
+      ;({ data } = await axios.get(`${baseUrl}`))
+      const { erc20Balance, halfDuplexErc20Balance, investedErc20Balance, accumulatedInterest } = data.foreign
+      return (
+        data.balanceDiff === 0.03 &&
+        erc20Balance === '0.005' &&
+        halfDuplexErc20Balance === '0.01' &&
+        investedErc20Balance === '0.015' &&
+        accumulatedInterest === '0.001'
+      )
+    })
+  })
 })

monitor-e2e/utils.js

@@ -1,7 +1,14 @@
 const Web3 = require('web3')
-const { ERC677_BRIDGE_TOKEN_ABI, BRIDGE_VALIDATORS_ABI, FOREIGN_NATIVE_TO_ERC_ABI, BOX_ABI } = require('../commons')
+const {
+  ERC677_BRIDGE_TOKEN_ABI,
+  BRIDGE_VALIDATORS_ABI,
+  FOREIGN_NATIVE_TO_ERC_ABI,
+  FOREIGN_ERC_TO_NATIVE_ABI,
+  BOX_ABI
+} = require('../commons')
+const { validator } = require('../e2e-commons/constants')
 
-const waitUntil = async (predicate, step = 100, timeout = 10000) => {
+const waitUntil = async (predicate, step = 100, timeout = 20000) => {
   const stopTime = Date.now() + timeout
   while (Date.now() <= stopTime) {
     const result = await predicate()
@@ -60,10 +67,57 @@ const addValidator = async (rpcUrl, account, bridgeAddress) => {
   })
 }
 
+const migrateToMCD = async (rpcUrl, bridgeAddress) => {
+  const web3 = new Web3(new Web3.providers.HttpProvider(rpcUrl))
+  web3.eth.accounts.wallet.add(validator.privateKey)
+  const bridgeContract = new web3.eth.Contract(FOREIGN_ERC_TO_NATIVE_ABI, bridgeAddress)
+  await bridgeContract.methods.migrateToMCD().send({
+    from: validator.address,
+    gas: '4000000'
+  })
+}
+
+const initializeChaiToken = async (rpcUrl, bridgeAddress) => {
+  const web3 = new Web3(new Web3.providers.HttpProvider(rpcUrl))
+  web3.eth.accounts.wallet.add(validator.privateKey)
+  const bridgeContract = new web3.eth.Contract(FOREIGN_ERC_TO_NATIVE_ABI, bridgeAddress)
+
+  await bridgeContract.methods.initializeChaiToken().send({
+    from: validator.address,
+    gas: '1000000'
+  })
+}
+
+const setMinDaiTokenBalance = async (rpcUrl, bridgeAddress, limit) => {
+  const web3 = new Web3(new Web3.providers.HttpProvider(rpcUrl))
+  web3.eth.accounts.wallet.add(validator.privateKey)
+  const bridgeContract = new web3.eth.Contract(FOREIGN_ERC_TO_NATIVE_ABI, bridgeAddress)
+
+  await bridgeContract.methods.setMinDaiTokenBalance(web3.utils.toWei(limit)).send({
+    from: validator.address,
+    gas: '1000000'
+  })
+}
+
+const convertDaiToChai = async (rpcUrl, bridgeAddress) => {
+  const web3 = new Web3(new Web3.providers.HttpProvider(rpcUrl))
+  web3.eth.accounts.wallet.add(validator.privateKey)
+  const bridgeContract = new web3.eth.Contract(FOREIGN_ERC_TO_NATIVE_ABI, bridgeAddress)
+
+  await bridgeContract.methods.convertDaiToChai().send({
+    from: validator.address,
+    gas: '1000000'
+  })
+}
+
 module.exports = {
   waitUntil,
   sendEther,
   sendTokens,
   addValidator,
-  sendAMBMessage
+  sendAMBMessage,
+  migrateToMCD,
+  initializeChaiToken,
+  setMinDaiTokenBalance,
+  convertDaiToChai
 }

monitor-e2e/wait-for-monitor.sh

@@ -3,7 +3,7 @@ FILES=(getBalances.json validators.json eventsStats.json alerts.json)
 check_files_exist() {
   rc=0
   for f in "${FILES[@]}"; do
-    command="test -f responses/$f"
+    command="test -f responses/bridge/$f"
     (docker-compose -f ../e2e-commons/docker-compose.yml exec monitor /bin/bash -c "$command") || rc=1
     (docker-compose -f ../e2e-commons/docker-compose.yml exec monitor-erc20 /bin/bash -c "$command") || rc=1
     (docker-compose -f ../e2e-commons/docker-compose.yml exec monitor-erc20-native /bin/bash -c "$command") || rc=1

monitor/.env.example

@@ -1,3 +1,5 @@
+MONITOR_BRIDGE_NAME=bridge
+
 COMMON_HOME_RPC_URL=https://sokol.poa.network
 COMMON_FOREIGN_RPC_URL=https://kovan.infura.io/mew
 COMMON_HOME_BRIDGE_ADDRESS=0xABb4C1399DcC28FBa3Beb76CAE2b50Be3e087353

monitor/Dockerfile

@@ -15,9 +15,9 @@ RUN mv ./contracts/build ./ && rm -rf ./contracts/* ./contracts/.[!.]* && mv ./b
 COPY ./commons ./commons
 
 COPY ./monitor ./monitor
-ARG DOT_ENV_PATH=./monitor/.env
-COPY ${DOT_ENV_PATH} ./monitor/.env
 
 WORKDIR /mono/monitor
-CMD echo "To start the monitor run:" \
-  "yarn check-and-start"
+CMD echo "To start the monitor web service run:" \
+  "yarn start" \
+  "To run monitor scripts run:" \
+  "yarn check-all"

monitor/README.md

@@ -4,7 +4,12 @@ Tool for checking balances and unprocessed events in bridged networks.
 ## Overview
 Please refer to the [POA TokenBridge](../README.md) overview first of all.
 
-- Deployed version: https://bridge-monitoring.poa.net/
+- Deployed version serves several monitor configurations:
+  * https://bridge-monitoring.poa.net/poa
+  * https://bridge-monitoring.poa.net/xdai
+  * https://bridge-monitoring.poa.net/wetc
+  * https://bridge-monitoring.poa.net/amb-dai
+  * https://bridge-monitoring.poa.net/amb-poa
 
 This tool allows you to spin up a NODE.JS server to monitor for health of the TokenBridge contracts: check for the balance difference, discover inconsistency in the validators list, catch unhandled transactions.
 
@@ -122,14 +127,19 @@ yarn start
 You can run web interface via [pm2](https://www.npmjs.com/package/pm2) or similar supervisor program.
 
 Using Docker:
-```
-docker-compose up -d
-```
+  * to run it very first time (or after changes related to the monitor code):
+    ```
+    docker-compose -f docker-compose-build.yml -f docker-compose.yml up -d --build
+    ```
+  * next time (or in case of usage of an official docker image)
+    ```
+    docker-compose up -d
+    ```
 
-- The application will run on `http://localhost:PORT`, where `PORT` is specified in your `.env` file.
+- The application will run on `http://localhost:MONITOR_PORT/MONITOR_BRIDGE_NAME`, where `MONITOR_PORT` and `MONITOR_BRIDGE_NAME` are specified in your `.env` file.
 - To enabled debug logging, set `DEBUG=1` variable in `.env`.
 
-## Check balances of contracts and validators, get unprocessed events
+## Preparing statistic about balances of bridge contracts and validators, get unprocessed events
 
 Using Yarn:
 ```
@@ -138,13 +148,32 @@ yarn check-all
 
 Using Docker:
 ```
-docker-compose exec monitor yarn check-all
+docker run --rm --env-file .env -v $(pwd)/responses:/mono/monitor/responses \
+  poanetwork/tokenbridge-monitor:latest /bin/bash -c 'yarn check-all'
 ```
 
+As soon as the process finishes, use the URL described above to get the statistic.
+
 ### Cron
 
 You can create cron job to run workers (see `crontab.example` for reference):
 
+## Ad-hoc monitoring
+
+There is a possibility to get bridge statistics without running the web interface use the commands provided above. In this case the results will be located in the `responses` directory.
+
+## Build the image without running the monitor
+
+To build the image change the directory:
+```
+cd monitor
+```
+
+And run the docker composer:
+```
+docker-compose -f docker-compose-build.yml build
+``` 
+
 ## Linting
 
 Running linter:

monitor/checkWorker.js

@@ -1,13 +1,17 @@
-const fs = require('fs')
-const path = require('path')
 const Web3 = require('web3')
 const logger = require('./logger')('checkWorker')
 const { getBridgeMode } = require('../commons')
 const getBalances = require('./getBalances')
 const getShortEventStats = require('./getShortEventStats')
 const validators = require('./validators')
+const { writeFile, createDir } = require('./utils/file')
+
+const { COMMON_HOME_BRIDGE_ADDRESS, COMMON_HOME_RPC_URL, MONITOR_BRIDGE_NAME } = process.env
+
+const MONITOR_VALIDATOR_HOME_TX_LIMIT = Number(process.env.MONITOR_VALIDATOR_HOME_TX_LIMIT) || 0
+const MONITOR_VALIDATOR_FOREIGN_TX_LIMIT = Number(process.env.MONITOR_VALIDATOR_FOREIGN_TX_LIMIT) || 0
+const MONITOR_TX_NUMBER_THRESHOLD = Number(process.env.MONITOR_TX_NUMBER_THRESHOLD) || 100
 
-const { COMMON_HOME_BRIDGE_ADDRESS, COMMON_HOME_RPC_URL } = process.env
 const homeProvider = new Web3.providers.HttpProvider(COMMON_HOME_RPC_URL)
 const web3Home = new Web3(homeProvider)
 
@@ -15,6 +19,7 @@ const { HOME_ERC_TO_ERC_ABI } = require('../commons')
 
 async function checkWorker() {
   try {
+    createDir(`/responses/${MONITOR_BRIDGE_NAME}`)
     const homeBridge = new web3Home.eth.Contract(HOME_ERC_TO_ERC_ABI, COMMON_HOME_BRIDGE_ADDRESS)
     const bridgeMode = await getBridgeMode(homeBridge)
     logger.debug('Bridge mode:', bridgeMode)
@@ -26,12 +31,35 @@ async function checkWorker() {
     const foreign = Object.assign({}, balances.foreign, events.foreign)
     const status = Object.assign({}, balances, events, { home }, { foreign })
     if (!status) throw new Error('status is empty: ' + JSON.stringify(status))
-    fs.writeFileSync(path.join(__dirname, '/responses/getBalances.json'), JSON.stringify(status, null, 4))
+    writeFile(`/responses/${MONITOR_BRIDGE_NAME}/getBalances.json`, status)
 
     logger.debug('calling validators()')
     const vBalances = await validators(bridgeMode)
     if (!vBalances) throw new Error('vBalances is empty: ' + JSON.stringify(vBalances))
-    fs.writeFileSync(path.join(__dirname, '/responses/validators.json'), JSON.stringify(vBalances, null, 4))
+
+    vBalances.homeOk = true
+    vBalances.foreignOk = true
+
+    if (MONITOR_VALIDATOR_HOME_TX_LIMIT) {
+      for (const hv in vBalances.home.validators) {
+        if (vBalances.home.validators[hv].leftTx < MONITOR_TX_NUMBER_THRESHOLD) {
+          vBalances.homeOk = false
+          break
+        }
+      }
+    }
+
+    if (MONITOR_VALIDATOR_FOREIGN_TX_LIMIT) {
+      for (const hv in vBalances.foreign.validators) {
+        if (vBalances.foreign.validators[hv].leftTx < MONITOR_TX_NUMBER_THRESHOLD) {
+          vBalances.foreignOk = false
+          break
+        }
+      }
+    }
+
+    vBalances.ok = vBalances.homeOk && vBalances.foreignOk
+    writeFile(`/responses/${MONITOR_BRIDGE_NAME}/validators.json`, vBalances)
     logger.debug('Done')
   } catch (e) {
     logger.error(e)

monitor/checkWorker2.js

@@ -1,19 +1,28 @@
-const fs = require('fs')
-const path = require('path')
 const logger = require('./logger')('checkWorker2')
 const eventsStats = require('./eventsStats')
 const alerts = require('./alerts')
+const { writeFile, createDir } = require('./utils/file')
+
+const { MONITOR_BRIDGE_NAME } = process.env
 
 async function checkWorker2() {
   try {
+    createDir(`/responses/${MONITOR_BRIDGE_NAME}`)
     logger.debug('calling eventsStats()')
     const evStats = await eventsStats()
     if (!evStats) throw new Error('evStats is empty: ' + JSON.stringify(evStats))
-    fs.writeFileSync(path.join(__dirname, '/responses/eventsStats.json'), JSON.stringify(evStats, null, 4))
+    evStats.ok =
+      (evStats.onlyInHomeDeposits || evStats.home.deliveredMsgNotProcessedInForeign).length === 0 &&
+      (evStats.onlyInForeignDeposits || evStats.home.processedMsgNotDeliveredInForeign).length === 0 &&
+      (evStats.onlyInHomeWithdrawals || evStats.foreign.deliveredMsgNotProcessedInHome).length === 0 &&
+      (evStats.onlyInForeignWithdrawals || evStats.foreign.processedMsgNotDeliveredInHome).length === 0
+    writeFile(`/responses/${MONITOR_BRIDGE_NAME}/eventsStats.json`, evStats)
+
     logger.debug('calling alerts()')
     const _alerts = await alerts()
     if (!_alerts) throw new Error('alerts is empty: ' + JSON.stringify(_alerts))
-    fs.writeFileSync(path.join(__dirname, '/responses/alerts.json'), JSON.stringify(_alerts, null, 4))
+    _alerts.ok = !_alerts.executeAffirmations.mostRecentTxHash && !_alerts.executeSignatures.mostRecentTxHash
+    writeFile(`/responses/${MONITOR_BRIDGE_NAME}/alerts.json`, _alerts)
     logger.debug('Done x2')
   } catch (e) {
     logger.error(e)

monitor/checkWorker3.js

@@ -1,16 +1,27 @@
-const fs = require('fs')
-const path = require('path')
+const Web3 = require('web3')
 const logger = require('./logger')('checkWorker3')
 const stuckTransfers = require('./stuckTransfers')
+const { writeFile, createDir } = require('./utils/file')
+
+const { MONITOR_BRIDGE_NAME, COMMON_HOME_BRIDGE_ADDRESS, COMMON_HOME_RPC_URL } = process.env
+const { getBridgeMode, HOME_NATIVE_TO_ERC_ABI, BRIDGE_MODES } = require('../commons')
+
+const homeProvider = new Web3.providers.HttpProvider(COMMON_HOME_RPC_URL)
+const web3Home = new Web3(homeProvider)
 
 async function checkWorker3() {
   try {
-    logger.debug('calling stuckTransfers()')
-    const transfers = await stuckTransfers()
-    // console.log(transfers)
-    if (!transfers) throw new Error('transfers is empty: ' + JSON.stringify(transfers))
-    fs.writeFileSync(path.join(__dirname, '/responses/stuckTransfers.json'), JSON.stringify(transfers, null, 4))
-    logger.debug('Done')
+    const homeBridge = new web3Home.eth.Contract(HOME_NATIVE_TO_ERC_ABI, COMMON_HOME_BRIDGE_ADDRESS)
+    const bridgeMode = await getBridgeMode(homeBridge)
+    if (bridgeMode === BRIDGE_MODES.NATIVE_TO_ERC_V1) {
+      createDir(`/responses/${MONITOR_BRIDGE_NAME}`)
+      logger.debug('calling stuckTransfers()')
+      const transfers = await stuckTransfers()
+      if (!transfers) throw new Error('transfers is empty: ' + JSON.stringify(transfers))
+      transfers.ok = transfers.total.length === 0
+      writeFile(`/responses/${MONITOR_BRIDGE_NAME}/stuckTransfers.json`, transfers)
+      logger.debug('Done')
+    }
   } catch (e) {
     logger.error('checkWorker3.js', e)
   }

monitor/crontab.example

@@ -2,4 +2,4 @@
 */4 * * * * cd $HOME/tokenbridge/monitor; yarn check-all >>cronWorker.out 2>>cronWorker.err
 
 # Docker:
-*/4 * * * * cd $HOME/tokenbridge/monitor; docker-compose exec monitor yarn check-all >>cronWorker.out 2>>cronWorker.err
+*/4 * * * * cd $HOME/tokenbridge/monitor; docker run --rm --env-file .env -v $(pwd)/responses:/mono/monitor/responses poanetwork/tokenbridge-monitor:latest /bin/bash -c 'yarn check-all' >>cronWorker.out 2>>cronWorker.err

monitor/docker-compose-build.yml

@@ -0,0 +1,6 @@
+---
+version: '2.4'
+services:
+  monitor:
+    image: poanetwork/tokenbridge-monitor
+    build: .

monitor/docker-compose.yml

@@ -2,13 +2,13 @@
 version: '2.4'
 services:
   monitor:
-    build:
-      context: ..
-      dockerfile: monitor/Dockerfile
+    image: poanetwork/tokenbridge-monitor:latest
     ports:
     - "${MONITOR_PORT}:${MONITOR_PORT}"
     env_file: ./.env
     environment: 
       - NODE_ENV=production
+    volumes:
+      - ./responses:/mono/monitor/responses
     restart: unless-stopped
-    entrypoint: "yarn check-and-start"
+    entrypoint: "yarn start"

monitor/getBalances.js

@@ -83,6 +83,44 @@ async function main(bridgeMode) {
     const foreignBridge = new web3Foreign.eth.Contract(FOREIGN_ERC_TO_NATIVE_ABI, COMMON_FOREIGN_BRIDGE_ADDRESS)
     const erc20Address = await foreignBridge.methods.erc20token().call()
     const erc20Contract = new web3Foreign.eth.Contract(ERC20_ABI, erc20Address)
+    let investedAmountInDai = 0
+    let bridgeDsrBalance = 0
+    let foreignHalfDuplexErc20Balance = 0
+    let displayChaiToken = false
+    let displayHalfDuplexToken = false
+    let tokenSwapAllowed = false
+    try {
+      const halfDuplexTokenAddress = await foreignBridge.methods.halfDuplexErc20token().call()
+      if (halfDuplexTokenAddress !== erc20Address) {
+        const halfDuplexToken = new web3Foreign.eth.Contract(ERC20_ABI, halfDuplexTokenAddress)
+        logger.debug('calling halfDuplexToken.methods.balanceOf')
+        foreignHalfDuplexErc20Balance = await halfDuplexToken.methods.balanceOf(COMMON_FOREIGN_BRIDGE_ADDRESS).call()
+        logger.debug('getting last block numbers')
+        const block = await web3Foreign.eth.getBlock('latest')
+
+        logger.debug(`Checking if SCD Emergency Shutdown has happened`)
+        tokenSwapAllowed = await foreignBridge.methods.isTokenSwapAllowed(block.timestamp).call()
+        displayHalfDuplexToken = true
+      }
+    } catch (e) {
+      logger.debug('Methods for half duplex token are not present')
+    }
+
+    try {
+      logger.debug('calling foreignBridge.methods.isChaiTokenEnabled')
+      if (await foreignBridge.methods.isChaiTokenEnabled().call()) {
+        displayChaiToken = true
+        logger.debug('calling foreignBridge.methods.investedAmountInDai')
+        investedAmountInDai = await foreignBridge.methods.investedAmountInDai().call()
+        logger.debug('calling foreignBridge.methods.dsrBalance')
+        bridgeDsrBalance = await foreignBridge.methods.dsrBalance().call()
+      } else {
+        logger.debug('Chai token is currently disabled')
+      }
+    } catch (e) {
+      logger.debug('Methods for chai token are not present')
+    }
+
     logger.debug('calling erc20Contract.methods.balanceOf')
     const foreignErc20Balance = await erc20Contract.methods.balanceOf(COMMON_FOREIGN_BRIDGE_ADDRESS).call()
 
@@ -91,7 +129,7 @@ async function main(bridgeMode) {
     const blockRewardAddress = await homeBridge.methods.blockRewardContract().call()
     const blockRewardContract = new web3Home.eth.Contract(BLOCK_REWARD_ABI, blockRewardAddress)
     logger.debug('calling blockReward.methods.mintedTotally')
-    const mintedCoins = await blockRewardContract.methods.mintedTotally().call()
+    const mintedCoins = await blockRewardContract.methods.mintedTotallyByBridge(COMMON_HOME_BRIDGE_ADDRESS).call()
     logger.debug('calling homeBridge.methods.totalBurntCoins')
     const burntCoins = await homeBridge.methods.totalBurntCoins().call()
 
@@ -99,16 +137,44 @@ async function main(bridgeMode) {
     const burntCoinsBN = new BN(burntCoins)
     const totalSupplyBN = mintedCoinsBN.minus(burntCoinsBN)
     const foreignErc20BalanceBN = new BN(foreignErc20Balance)
+    const investedAmountInDaiBN = new BN(investedAmountInDai)
+    const bridgeDsrBalanceBN = new BN(bridgeDsrBalance)
+    const halfDuplexErc20BalanceBN =
+      displayHalfDuplexToken && tokenSwapAllowed ? new BN(foreignHalfDuplexErc20Balance) : new BN(0)
+
+    const diff = foreignErc20BalanceBN
+      .plus(halfDuplexErc20BalanceBN)
+      .plus(investedAmountInDaiBN)
+      .minus(totalSupplyBN)
+      .toFixed()
+
+    let foreign = {
+      erc20Balance: Web3Utils.fromWei(foreignErc20Balance)
+    }
+
+    if (displayHalfDuplexToken && tokenSwapAllowed) {
+      foreign = {
+        ...foreign,
+        halfDuplexErc20Balance: Web3Utils.fromWei(foreignHalfDuplexErc20Balance)
+      }
+    } else if (displayHalfDuplexToken && !tokenSwapAllowed) {
+      foreign = {
+        ...foreign,
+        halfDuplexErc20BalanceAfterES: Web3Utils.fromWei(foreignHalfDuplexErc20Balance)
+      }
+    }
+
+    if (displayChaiToken) {
+      foreign.investedErc20Balance = Web3Utils.fromWei(investedAmountInDai)
+      foreign.accumulatedInterest = Web3Utils.fromWei(bridgeDsrBalanceBN.minus(investedAmountInDaiBN).toString(10))
+    }
 
-    const diff = foreignErc20BalanceBN.minus(totalSupplyBN).toFixed()
     logger.debug('Done')
     return {
       home: {
         totalSupply: Web3Utils.fromWei(totalSupplyBN.toFixed())
       },
-      foreign: {
-        erc20Balance: Web3Utils.fromWei(foreignErc20Balance)
-      },
+      foreign,
       balanceDiff: Number(Web3Utils.fromWei(diff)),
       lastChecked: Math.floor(Date.now() / 1000)
     }

monitor/index.js

@@ -1,45 +1,16 @@
 require('dotenv').config()
 const express = require('express')
-const fs = require('fs')
-const { isV1Bridge } = require('./utils/serverUtils')
+const { readFile } = require('./utils/file')
 
 const app = express()
+const bridgeRouter = express.Router({ mergeParams: true })
 
-const MONITOR_TX_NUMBER_THRESHOLD = Number(process.env.MONITOR_TX_NUMBER_THRESHOLD) || 100
-console.log('MONITOR_TX_NUMBER_THRESHOLD = ' + MONITOR_TX_NUMBER_THRESHOLD)
+app.get('/favicon.ico', (req, res) => res.sendStatus(204))
+app.use('/:bridgeName', bridgeRouter)
 
-async function readFile(path) {
+bridgeRouter.get('/', async (req, res, next) => {
   try {
-    const content = await fs.readFileSync(path)
-    const json = JSON.parse(content)
-    const timeDiff = Math.floor(Date.now() / 1000) - json.lastChecked
-    return Object.assign({}, json, { timeDiff })
-  } catch (e) {
-    console.error(e)
-    return {
-      error: 'please check your worker'
-    }
-  }
-}
-
-async function initV1routes(app) {
-  const exposeV1Routes = await isV1Bridge()
-  if (exposeV1Routes) {
-    app.get('/stuckTransfers', async (req, res, next) => {
-      try {
-        const results = await readFile('./responses/stuckTransfers.json')
-        results.ok = results.total.length === 0
-        res.json(results)
-      } catch (e) {
-        next(e)
-      }
-    })
-  }
-}
-
-app.get('/', async (req, res, next) => {
-  try {
-    const results = await readFile('./responses/getBalances.json')
+    const results = await readFile(`./responses/${req.params.bridgeName}/getBalances.json`)
     res.json(results)
   } catch (e) {
     // this will eventually be handled by your error handling middleware
@@ -47,24 +18,9 @@ app.get('/', async (req, res, next) => {
   }
 })
 
-app.get('/validators', async (req, res, next) => {
+bridgeRouter.get('/validators', async (req, res, next) => {
   try {
-    const results = await readFile('./responses/validators.json')
-    results.homeOk = true
-    results.foreignOk = true
-    for (const hv in results.home.validators) {
-      if (results.home.validators[hv].leftTx < MONITOR_TX_NUMBER_THRESHOLD) {
-        results.homeOk = false
-        break
-      }
-    }
-    for (const hv in results.foreign.validators) {
-      if (results.foreign.validators[hv].leftTx < MONITOR_TX_NUMBER_THRESHOLD) {
-        results.foreignOk = false
-        break
-      }
-    }
-    results.ok = results.homeOk && results.foreignOk
+    const results = await readFile(`./responses/${req.params.bridgeName}/validators.json`)
     res.json(results)
   } catch (e) {
     // this will eventually be handled by your error handling middleware
@@ -72,15 +28,9 @@ app.get('/validators', async (req, res, next) => {
   }
 })
 
-// responses/eventsStats.json
-app.get('/eventsStats', async (req, res, next) => {
+bridgeRouter.get('/eventsStats', async (req, res, next) => {
   try {
-    const results = await readFile('./responses/eventsStats.json')
-    results.ok =
-      (results.onlyInHomeDeposits || results.home.deliveredMsgNotProcessedInForeign).length === 0 &&
-      (results.onlyInForeignDeposits || results.home.processedMsgNotDeliveredInForeign).length === 0 &&
-      (results.onlyInHomeWithdrawals || results.foreign.deliveredMsgNotProcessedInHome).length === 0 &&
-      (results.onlyInForeignWithdrawals || results.foreign.processedMsgNotDeliveredInHome).length === 0
+    const results = await readFile(`./responses/${req.params.bridgeName}/eventsStats.json`)
     res.json(results)
   } catch (e) {
     // this will eventually be handled by your error handling middleware
@@ -88,17 +38,23 @@ app.get('/eventsStats', async (req, res, next) => {
   }
 })
 
-app.get('/alerts', async (req, res, next) => {
+bridgeRouter.get('/alerts', async (req, res, next) => {
   try {
-    const results = await readFile('./responses/alerts.json')
-    results.ok = !results.executeAffirmations.mostRecentTxHash && !results.executeSignatures.mostRecentTxHash
+    const results = await readFile(`./responses/${req.params.bridgeName}/alerts.json`)
     res.json(results)
   } catch (e) {
     next(e)
   }
 })
 
-initV1routes(app)
+bridgeRouter.get('/stuckTransfers', async (req, res, next) => {
+  try {
+    const results = await readFile(`./responses/${req.params.bridgeName}/stuckTransfers.json`)
+    res.json(results)
+  } catch (e) {
+    next(e)
+  }
+})
 
 const port = process.env.MONITOR_PORT || 3003
 app.set('port', port)

monitor/package.json

@@ -4,7 +4,7 @@
   "description": "",
   "main": "index.js",
   "scripts": {
-    "check-all": "timeout -s 9 5m node checkWorker.js && timeout -s 9 5m node checkWorker2.js",
+    "check-all": "timeout -s 9 5m node checkWorker.js && timeout -s 9 5m node checkWorker2.js && timeout -s 9 5m node checkWorker3.js",
     "start": "node index.js",
     "check-and-start": "yarn check-all && yarn start",
     "lint": "eslint . --ignore-path ../.eslintignore",

monitor/scripts/checkDocker.sh

@@ -1,9 +0,0 @@
-#!/bin/bash
-cd $(dirname $0)/..
-
-if /usr/local/bin/docker-compose ps | grep -q -i 'monitor'; then
-  # https://github.com/docker/compose/issues/3352
-  COMPOSE_INTERACTIVE_NO_CLI=1 /usr/local/bin/docker-compose exec -T monitor /bin/bash -c 'yarn check-all'
-else
-  echo "Monitor is not running, skipping checks."
-fi

monitor/scripts/getBridgeStats.sh

@@ -0,0 +1,11 @@
+#!/bin/bash
+cd $(dirname $0)/..
+
+if /usr/local/bin/docker-compose ps | grep -q -i 'monitor'; then
+  for file in configs/*.env
+  do
+    docker run --rm --env-file $file -v $(pwd)/responses:/mono/monitor/responses poanetwork/tokenbridge-monitor:latest /bin/bash -c 'yarn check-all'
+  done
+else
+  echo "Monitor is not running, skipping checks."
+fi

monitor/utils/events.js

@@ -15,6 +15,7 @@ const {
   ZERO_ADDRESS
 } = require('../../commons')
 const { normalizeEventInformation } = require('./message')
+const { filterTransferBeforeES } = require('./tokenUtils')
 
 const {
   COMMON_HOME_RPC_URL,
@@ -42,10 +43,11 @@ async function main(mode) {
   const v1Bridge = bridgeMode === BRIDGE_MODES.NATIVE_TO_ERC_V1
   let isExternalErc20
   let erc20Contract
+  let erc20Address
   let normalizeEvent = normalizeEventInformation
   if (bridgeMode !== BRIDGE_MODES.ARBITRARY_MESSAGE) {
     const erc20MethodName = bridgeMode === BRIDGE_MODES.NATIVE_TO_ERC || v1Bridge ? 'erc677token' : 'erc20token'
-    const erc20Address = await foreignBridge.methods[erc20MethodName]().call()
+    erc20Address = await foreignBridge.methods[erc20MethodName]().call()
     const tokenType = await getTokenType(
       new web3Foreign.eth.Contract(ERC677_BRIDGE_TOKEN_ABI, erc20Address),
       COMMON_FOREIGN_BRIDGE_ADDRESS
@@ -110,12 +112,31 @@ async function main(mode) {
       const bridgeTokensSwappedEvents = tokensSwappedEvents.filter(e => e.address === COMMON_FOREIGN_BRIDGE_ADDRESS)
 
       // Get transfer events for each previous erc20
-      const uniqueTokenAddresses = [...new Set(bridgeTokensSwappedEvents.map(e => e.returnValues.from))]
+      const uniqueTokenAddressesSet = new Set(bridgeTokensSwappedEvents.map(e => e.returnValues.from))
+
+      // Exclude chai token from previous erc20
+      try {
+        logger.debug('calling foreignBridge.chaiToken()')
+        const chaiToken = await foreignBridge.methods.chaiToken().call()
+        uniqueTokenAddressesSet.delete(chaiToken)
+      } catch (e) {
+        logger.debug('call to foreignBridge.chaiToken() failed')
+      }
+      // Exclude dai token from previous erc20
+      try {
+        logger.debug('calling foreignBridge.erc20token()')
+        const daiToken = await foreignBridge.methods.erc20token().call()
+        uniqueTokenAddressesSet.delete(daiToken)
+      } catch (e) {
+        logger.debug('call to foreignBridge.erc20token() failed')
+      }
+
+      const uniqueTokenAddresses = [...uniqueTokenAddressesSet]
       await Promise.all(
         uniqueTokenAddresses.map(async tokenAddress => {
-          const previousERC20 = new web3Foreign.eth.Contract(ERC20_ABI, tokenAddress)
+          const halfDuplexTokenContract = new web3Foreign.eth.Contract(ERC20_ABI, tokenAddress)
 
-          const previousTransferEvents = (await getPastEvents(previousERC20, {
+          const halfDuplexTransferEvents = (await getPastEvents(halfDuplexTokenContract, {
             event: 'Transfer',
             fromBlock: MONITOR_FOREIGN_START_BLOCK,
             toBlock: foreignBlockNumber,
@@ -123,7 +144,15 @@ async function main(mode) {
               filter: { to: COMMON_FOREIGN_BRIDGE_ADDRESS }
             }
           })).map(normalizeEvent)
-          transferEvents = [...previousTransferEvents, ...transferEvents]
+
+          // Remove events after the ES
+          const validHalfDuplexTransfers = await filterTransferBeforeES(
+            halfDuplexTransferEvents,
+            web3Foreign,
+            foreignBridge
+          )
+
+          transferEvents = [...validHalfDuplexTransfers, ...transferEvents]
         })
       )
 

monitor/utils/file.js

@@ -0,0 +1,36 @@
+const fs = require('fs')
+const path = require('path')
+
+async function readFile(filePath) {
+  try {
+    const content = await fs.readFileSync(filePath)
+    const json = JSON.parse(content)
+    const timeDiff = Math.floor(Date.now() / 1000) - json.lastChecked
+    return Object.assign({}, json, { timeDiff })
+  } catch (e) {
+    console.error(e)
+    return {
+      error: 'the bridge statistics are not available'
+    }
+  }
+}
+
+function writeFile(filePath, object) {
+  fs.writeFileSync(path.join(process.cwd(), filePath), JSON.stringify(object, null, 4))
+}
+
+function createDir(dirPath) {
+  try {
+    fs.mkdirSync(path.join(process.cwd(), dirPath), { recursive: true })
+  } catch (e) {
+    if (!e.message.includes('exists')) {
+      throw e
+    }
+  }
+}
+
+module.exports = {
+  readFile,
+  writeFile,
+  createDir
+}

monitor/utils/tokenUtils.js

@@ -0,0 +1,40 @@
+let beforeESBiggestBlockNumber = 0
+
+/**
+ *
+ * Returns true if the event was before the Emergency Shutdown.
+ * The method has an optimization to avoid making request if a bigger block number is confirmed
+ * to be before the ES. Events should be iterated from newer to older order to use the optimization.
+ */
+async function transferBeforeES(event, web3Foreign, foreignBridge) {
+  const { blockNumber } = event
+
+  if (blockNumber < beforeESBiggestBlockNumber) {
+    return true
+  }
+
+  const block = await web3Foreign.eth.getBlock(blockNumber)
+
+  const tokenSwapAllowed = await foreignBridge.methods.isTokenSwapAllowed(block.timestamp).call()
+  if (tokenSwapAllowed) {
+    beforeESBiggestBlockNumber = blockNumber
+  }
+  return tokenSwapAllowed
+}
+
+async function filterTransferBeforeES(array, web3Foreign, foreignBridge) {
+  const newArray = []
+  // Iterate events from newer to older
+  for (let i = array.length - 1; i >= 0; i--) {
+    const beforeES = await transferBeforeES(array[i], web3Foreign, foreignBridge)
+    if (beforeES) {
+      // add element to first position so the new array will have the same order
+      newArray.unshift(array[i])
+    }
+  }
+  return newArray
+}
+
+module.exports = {
+  filterTransferBeforeES
+}

monitor/validators.js

@@ -10,12 +10,10 @@ const {
   COMMON_FOREIGN_RPC_URL,
   COMMON_HOME_BRIDGE_ADDRESS,
   COMMON_FOREIGN_BRIDGE_ADDRESS,
-  MONITOR_VALIDATOR_HOME_TX_LIMIT,
   COMMON_HOME_GAS_PRICE_SUPPLIER_URL,
   COMMON_HOME_GAS_PRICE_SPEED_TYPE,
   COMMON_HOME_GAS_PRICE_FALLBACK,
   COMMON_HOME_GAS_PRICE_FACTOR,
-  MONITOR_VALIDATOR_FOREIGN_TX_LIMIT,
   COMMON_FOREIGN_GAS_PRICE_SUPPLIER_URL,
   COMMON_FOREIGN_GAS_PRICE_SPEED_TYPE,
   COMMON_FOREIGN_GAS_PRICE_FALLBACK,
@@ -23,6 +21,8 @@ const {
 } = process.env
 const MONITOR_HOME_START_BLOCK = Number(process.env.MONITOR_HOME_START_BLOCK) || 0
 const MONITOR_FOREIGN_START_BLOCK = Number(process.env.MONITOR_FOREIGN_START_BLOCK) || 0
+const MONITOR_VALIDATOR_HOME_TX_LIMIT = Number(process.env.MONITOR_VALIDATOR_HOME_TX_LIMIT) || 0
+const MONITOR_VALIDATOR_FOREIGN_TX_LIMIT = Number(process.env.MONITOR_VALIDATOR_FOREIGN_TX_LIMIT) || 0
 
 const Web3Utils = Web3.utils
 
@@ -65,76 +65,97 @@ async function main(bridgeMode) {
   const foreignBridgeValidators = new web3Foreign.eth.Contract(BRIDGE_VALIDATORS_ABI, foreignValidatorsAddress)
 
   logger.debug('calling foreignBridgeValidators getValidatorList()')
-  const foreignValidators = await getValidatorList(foreignValidatorsAddress, web3Foreign.eth, {
+  const foreignValidators = (await getValidatorList(foreignValidatorsAddress, web3Foreign.eth, {
     from: MONITOR_FOREIGN_START_BLOCK,
     to: foreignBlockNumber,
     logger
-  })
+  })).map(web3Foreign.utils.toChecksumAddress)
 
   logger.debug('calling homeBridgeValidators getValidatorList()')
-  const homeValidators = await getValidatorList(homeValidatorsAddress, web3Home.eth, {
+  const homeValidators = (await getValidatorList(homeValidatorsAddress, web3Home.eth, {
     from: MONITOR_HOME_START_BLOCK,
     to: homeBlockNumber,
     logger
-  })
+  })).map(web3Home.utils.toChecksumAddress)
 
-  const homeBalances = {}
-  logger.debug('calling asyncForEach homeValidators homeBalances')
-  await asyncForEach(homeValidators, async v => {
-    homeBalances[v] = Web3Utils.fromWei(await web3Home.eth.getBalance(v))
-  })
   const foreignVBalances = {}
   const homeVBalances = {}
 
-  logger.debug('calling home getGasPrices')
-  const homeGasPrice =
-    (await gasPriceFromSupplier(() => fetch(COMMON_HOME_GAS_PRICE_SUPPLIER_URL), homeGasPriceSupplierOpts)) ||
-    Web3Utils.toBN(COMMON_HOME_GAS_PRICE_FALLBACK)
-  const homeGasPriceGwei = Web3Utils.fromWei(homeGasPrice.toString(), 'gwei')
-  const homeTxCost = homeGasPrice.mul(Web3Utils.toBN(MONITOR_VALIDATOR_HOME_TX_LIMIT))
+  let homeGasPrice
+  let homeGasPriceGwei
+  let homeTxCost
 
-  logger.debug('calling foreign getGasPrices')
-  const foreignGasPrice =
-    (await gasPriceFromSupplier(() => fetch(COMMON_FOREIGN_GAS_PRICE_SUPPLIER_URL), foreignGasPriceSupplierOpts)) ||
-    Web3Utils.toBN(COMMON_FOREIGN_GAS_PRICE_FALLBACK)
-  const foreignGasPriceGwei = Web3Utils.fromWei(foreignGasPrice.toString(), 'gwei')
-  const foreignTxCost = foreignGasPrice.mul(Web3Utils.toBN(MONITOR_VALIDATOR_FOREIGN_TX_LIMIT))
+  if (MONITOR_VALIDATOR_HOME_TX_LIMIT) {
+    logger.debug('calling home getGasPrices')
+    homeGasPrice =
+      (await gasPriceFromSupplier(() => fetch(COMMON_HOME_GAS_PRICE_SUPPLIER_URL), homeGasPriceSupplierOpts)) ||
+      Web3Utils.toBN(COMMON_HOME_GAS_PRICE_FALLBACK)
+    homeGasPriceGwei = Web3Utils.fromWei(homeGasPrice.toString(), 'gwei')
+    homeTxCost = homeGasPrice.mul(Web3Utils.toBN(MONITOR_VALIDATOR_HOME_TX_LIMIT))
+  }
+
+  let foreignGasPrice
+  let foreignGasPriceGwei
+  let foreignTxCost
+
+  if (MONITOR_VALIDATOR_FOREIGN_TX_LIMIT) {
+    logger.debug('calling foreign getGasPrices')
+    foreignGasPrice =
+      (await gasPriceFromSupplier(() => fetch(COMMON_FOREIGN_GAS_PRICE_SUPPLIER_URL), foreignGasPriceSupplierOpts)) ||
+      Web3Utils.toBN(COMMON_FOREIGN_GAS_PRICE_FALLBACK)
+    foreignGasPriceGwei = Web3Utils.fromWei(foreignGasPrice.toString(), 'gwei')
+    foreignTxCost = foreignGasPrice.mul(Web3Utils.toBN(MONITOR_VALIDATOR_FOREIGN_TX_LIMIT))
+  }
 
   let validatorsMatch = true
   logger.debug('calling asyncForEach foreignValidators foreignVBalances')
   await asyncForEach(foreignValidators, async v => {
     const balance = await web3Foreign.eth.getBalance(v)
-    const leftTx = Web3Utils.toBN(balance)
-      .div(foreignTxCost)
-      .toString(10)
-    foreignVBalances[v] = {
-      balance: Web3Utils.fromWei(balance),
-      leftTx: Number(leftTx),
-      gasPrice: Number(foreignGasPriceGwei)
+    if (MONITOR_VALIDATOR_FOREIGN_TX_LIMIT) {
+      const leftTx = Web3Utils.toBN(balance)
+        .div(foreignTxCost)
+        .toString(10)
+      foreignVBalances[v] = {
+        balance: Web3Utils.fromWei(balance),
+        leftTx: Number(leftTx),
+        gasPrice: Number(foreignGasPriceGwei)
+      }
+    } else {
+      foreignVBalances[v] = {
+        balance: Web3Utils.fromWei(balance)
+      }
     }
+
     if (!homeValidators.includes(v)) {
       validatorsMatch = false
       foreignVBalances[v].onlyOnForeign = true
     }
   })
+
   logger.debug('calling asyncForEach homeValidators homeVBalances')
   await asyncForEach(homeValidators, async v => {
     const balance = await web3Home.eth.getBalance(v)
-    const leftTx = homeTxCost.isZero()
-      ? 999999
-      : Web3Utils.toBN(balance)
-          .div(homeTxCost)
-          .toString(10)
-    homeVBalances[v] = {
-      balance: Web3Utils.fromWei(balance),
-      leftTx: Number(leftTx),
-      gasPrice: Number(homeGasPriceGwei)
+    if (MONITOR_VALIDATOR_HOME_TX_LIMIT) {
+      const leftTx = Web3Utils.toBN(balance)
+        .div(homeTxCost)
+        .toString(10)
+      homeVBalances[v] = {
+        balance: Web3Utils.fromWei(balance),
+        leftTx: Number(leftTx),
+        gasPrice: Number(homeGasPriceGwei)
+      }
+    } else {
+      homeVBalances[v] = {
+        balance: Web3Utils.fromWei(balance)
+      }
     }
+
     if (!foreignValidators.includes(v)) {
       validatorsMatch = false
       homeVBalances[v].onlyOnHome = true
     }
   })
+
   logger.debug('calling homeBridgeValidators.methods.requiredSignatures().call()')
   const reqSigHome = await homeBridgeValidators.methods.requiredSignatures().call()
   logger.debug('calling foreignBridgeValidators.methods.requiredSignatures().call()')

oracle-e2e/package.json

@@ -6,7 +6,7 @@
   "scripts": {
     "start": "mocha",
     "lint": "eslint . --ignore-path ../.eslintignore",
-    "native-to-erc": "mocha test/nativeToErc.js"
+    "amb": "ULTIMATE=true mocha test/amb.js"
   },
   "author": "",
   "license": "ISC",

oracle-e2e/run-tests.sh

@@ -1,6 +1,6 @@
 cd $(dirname $0)
 
-../e2e-commons/up.sh deploy oracle
+../e2e-commons/up.sh deploy blocks oracle oracle-validator-2 oracle-validator-3
 
 docker-compose -f ../e2e-commons/docker-compose.yml run e2e yarn workspace oracle-e2e run start
 rc=$?

oracle-e2e/test/amb.js

@@ -1,22 +1,55 @@
 const Web3 = require('web3')
 const assert = require('assert')
-const promiseRetry = require('promise-retry')
-const { user, homeRPC, foreignRPC, amb } = require('../../e2e-commons/constants.json')
-const { generateNewBlock } = require('../../e2e-commons/utils')
-const { BOX_ABI } = require('../../commons')
+const { user, homeRPC, foreignRPC, amb, validator } = require('../../e2e-commons/constants.json')
+const { uniformRetry } = require('../../e2e-commons/utils')
+const { BOX_ABI, HOME_AMB_ABI, FOREIGN_AMB_ABI } = require('../../commons')
+const { setRequiredSignatures } = require('./utils')
 
 const { toBN } = Web3.utils
 
 const homeWeb3 = new Web3(new Web3.providers.HttpProvider(homeRPC.URL))
 const foreignWeb3 = new Web3(new Web3.providers.HttpProvider(foreignRPC.URL))
 
+const COMMON_HOME_BRIDGE_ADDRESS = amb.home
+const COMMON_FOREIGN_BRIDGE_ADDRESS = amb.foreign
+
 homeWeb3.eth.accounts.wallet.add(user.privateKey)
+homeWeb3.eth.accounts.wallet.add(validator.privateKey)
 foreignWeb3.eth.accounts.wallet.add(user.privateKey)
+foreignWeb3.eth.accounts.wallet.add(validator.privateKey)
 
 const homeBox = new homeWeb3.eth.Contract(BOX_ABI, amb.homeBox)
 const foreignBox = new foreignWeb3.eth.Contract(BOX_ABI, amb.foreignBox)
+const homeBridge = new homeWeb3.eth.Contract(HOME_AMB_ABI, COMMON_HOME_BRIDGE_ADDRESS)
+const foreignBridge = new foreignWeb3.eth.Contract(FOREIGN_AMB_ABI, COMMON_FOREIGN_BRIDGE_ADDRESS)
 
 describe('arbitrary message bridging', () => {
+  before(async () => {
+    // Only 1 validator is used in ultimate tests
+    if (process.env.ULTIMATE !== 'true') {
+      // Set 2 required signatures for home bridge
+      await setRequiredSignatures({
+        bridgeContract: homeBridge,
+        web3: homeWeb3,
+        requiredSignatures: 2,
+        options: {
+          from: validator.address,
+          gas: '4000000'
+        }
+      })
+
+      // Set 2 required signatures for foreign bridge
+      await setRequiredSignatures({
+        bridgeContract: foreignBridge,
+        web3: foreignWeb3,
+        requiredSignatures: 2,
+        options: {
+          from: validator.address,
+          gas: '4000000'
+        }
+      })
+    }
+  })
   describe('Home to Foreign', () => {
     describe('Subsidized Mode', () => {
       it('should bridge message', async () => {
@@ -25,7 +58,7 @@ describe('arbitrary message bridging', () => {
         const initialValue = await foreignBox.methods.value().call()
         assert(!toBN(initialValue).eq(toBN(newValue)), 'initial value should be different from new value')
 
-        const setValueTx = await homeBox.methods
+        await homeBox.methods
           .setValueOnOtherNetwork(newValue, amb.home, amb.foreignBox)
           .send({
             from: user.address,
@@ -35,30 +68,8 @@ describe('arbitrary message bridging', () => {
             console.error(e)
           })
 
-        // Send a trivial transaction to generate a new block since the watcher
-        // is configured to wait 1 confirmation block
-        await generateNewBlock(homeWeb3, user.address)
-
-        // The bridge should create a new transaction with a CollectedSignatures
-        // event so we generate another trivial transaction
-        await promiseRetry(
-          async retry => {
-            const lastBlockNumber = await homeWeb3.eth.getBlockNumber()
-            if (lastBlockNumber >= setValueTx.blockNumber + 2) {
-              await generateNewBlock(homeWeb3, user.address)
-            } else {
-              retry()
-            }
-          },
-          {
-            forever: true,
-            factor: 1,
-            minTimeout: 500
-          }
-        )
-
         // check that value changed and balance decreased
-        await promiseRetry(async retry => {
+        await uniformRetry(async retry => {
           const value = await foreignBox.methods.value().call()
           if (!toBN(value).eq(toBN(newValue))) {
             retry()
@@ -85,12 +96,8 @@ describe('arbitrary message bridging', () => {
             console.error(e)
           })
 
-        // Send a trivial transaction to generate a new block since the watcher
-        // is configured to wait 1 confirmation block
-        await generateNewBlock(foreignWeb3, user.address)
-
         // check that value changed and balance decreased
-        await promiseRetry(async retry => {
+        await uniformRetry(async retry => {
           const value = await homeBox.methods.value().call()
           if (!toBN(value).eq(toBN(newValue))) {
             retry()

oracle-e2e/test/ercToErc.js

@@ -1,9 +1,9 @@
 const Web3 = require('web3')
 const assert = require('assert')
-const promiseRetry = require('promise-retry')
-const { user, secondUser, ercToErcBridge, homeRPC, foreignRPC } = require('../../e2e-commons/constants.json')
-const { ERC677_BRIDGE_TOKEN_ABI, FOREIGN_ERC_TO_NATIVE_ABI } = require('../../commons')
-const { generateNewBlock } = require('../../e2e-commons/utils')
+const { user, secondUser, ercToErcBridge, homeRPC, foreignRPC, validator } = require('../../e2e-commons/constants.json')
+const { ERC677_BRIDGE_TOKEN_ABI, FOREIGN_ERC_TO_NATIVE_ABI, HOME_ERC_TO_ERC_ABI } = require('../../commons')
+const { uniformRetry } = require('../../e2e-commons/utils')
+const { setRequiredSignatures } = require('./utils')
 
 const homeWeb3 = new Web3(new Web3.providers.HttpProvider(homeRPC.URL))
 const foreignWeb3 = new Web3(new Web3.providers.HttpProvider(foreignRPC.URL))
@@ -14,13 +14,39 @@ const COMMON_FOREIGN_BRIDGE_ADDRESS = ercToErcBridge.foreign
 const { toBN } = foreignWeb3.utils
 
 homeWeb3.eth.accounts.wallet.add(user.privateKey)
+homeWeb3.eth.accounts.wallet.add(validator.privateKey)
 foreignWeb3.eth.accounts.wallet.add(user.privateKey)
+foreignWeb3.eth.accounts.wallet.add(validator.privateKey)
 
 const erc20Token = new foreignWeb3.eth.Contract(ERC677_BRIDGE_TOKEN_ABI, ercToErcBridge.foreignToken)
 const foreignBridge = new foreignWeb3.eth.Contract(FOREIGN_ERC_TO_NATIVE_ABI, COMMON_FOREIGN_BRIDGE_ADDRESS)
 const erc677Token = new homeWeb3.eth.Contract(ERC677_BRIDGE_TOKEN_ABI, ercToErcBridge.homeToken)
+const homeBridge = new homeWeb3.eth.Contract(HOME_ERC_TO_ERC_ABI, COMMON_HOME_BRIDGE_ADDRESS)
 
 describe('erc to erc', () => {
+  before(async () => {
+    // Set 2 required signatures for home bridge
+    await setRequiredSignatures({
+      bridgeContract: homeBridge,
+      web3: homeWeb3,
+      requiredSignatures: 2,
+      options: {
+        from: validator.address,
+        gas: '4000000'
+      }
+    })
+
+    // Set 2 required signatures for foreign bridge
+    await setRequiredSignatures({
+      bridgeContract: foreignBridge,
+      web3: foreignWeb3,
+      requiredSignatures: 2,
+      options: {
+        from: validator.address,
+        gas: '4000000'
+      }
+    })
+  })
   it('should convert tokens in foreign to tokens in home', async () => {
     const balance = await erc20Token.methods.balanceOf(user.address).call()
     assert(!toBN(balance).isZero(), 'Account should have tokens')
@@ -49,12 +75,8 @@ describe('erc to erc', () => {
         console.error(e)
       })
 
-    // Send a trivial transaction to generate a new block since the watcher
-    // is configured to wait 1 confirmation block
-    await generateNewBlock(foreignWeb3, user.address)
-
     // check that balance increases
-    await promiseRetry(async retry => {
+    await uniformRetry(async retry => {
       const balance = await erc677Token.methods.balanceOf(user.address).call()
       const recipientBalance = await erc677Token.methods.balanceOf(secondUser.address).call()
       assert(toBN(balance).isZero(), 'User balance should be the same')
@@ -76,12 +98,8 @@ describe('erc to erc', () => {
         console.error(e)
       })
 
-    // Send a trivial transaction to generate a new block since the watcher
-    // is configured to wait 1 confirmation block
-    await generateNewBlock(foreignWeb3, user.address)
-
     // check that balance increases
-    await promiseRetry(async retry => {
+    await uniformRetry(async retry => {
       const balance = await erc677Token.methods.balanceOf(user.address).call()
       if (toBN(balance).isZero()) {
         retry()
@@ -98,7 +116,7 @@ describe('erc to erc', () => {
     assert(!toBN(balance).isZero(), 'Account should have tokens')
 
     // send transaction to home bridge
-    const depositTx = await erc677Token.methods
+    await erc677Token.methods
       .transferAndCall(COMMON_HOME_BRIDGE_ADDRESS, homeWeb3.utils.toWei('0.01'), '0x')
       .send({
         from: user.address,
@@ -108,30 +126,8 @@ describe('erc to erc', () => {
         console.error(e)
       })
 
-    // Send a trivial transaction to generate a new block since the watcher
-    // is configured to wait 1 confirmation block
-    await generateNewBlock(homeWeb3, user.address)
-
-    // The bridge should create a new transaction with a CollectedSignatures
-    // event so we generate another trivial transaction
-    await promiseRetry(
-      async retry => {
-        const lastBlockNumber = await homeWeb3.eth.getBlockNumber()
-        if (lastBlockNumber >= depositTx.blockNumber + 2) {
-          await generateNewBlock(homeWeb3, user.address)
-        } else {
-          retry()
-        }
-      },
-      {
-        forever: true,
-        factor: 1,
-        minTimeout: 500
-      }
-    )
-
     // check that balance increases
-    await promiseRetry(async retry => {
+    await uniformRetry(async retry => {
       const balance = await erc20Token.methods.balanceOf(user.address).call()
       if (toBN(balance).lte(toBN(originalBalance))) {
         retry()

oracle-e2e/test/ercToNative.js

@@ -1,9 +1,17 @@
 const Web3 = require('web3')
 const assert = require('assert')
 const promiseRetry = require('promise-retry')
-const { user, secondUser, ercToNativeBridge, homeRPC, foreignRPC } = require('../../e2e-commons/constants.json')
-const { ERC677_BRIDGE_TOKEN_ABI, FOREIGN_ERC_TO_NATIVE_ABI } = require('../../commons')
-const { generateNewBlock } = require('../../e2e-commons/utils')
+const {
+  user,
+  secondUser,
+  validator,
+  ercToNativeBridge,
+  homeRPC,
+  foreignRPC
+} = require('../../e2e-commons/constants.json')
+const { ERC677_BRIDGE_TOKEN_ABI, FOREIGN_ERC_TO_NATIVE_ABI, SAI_TOP, HOME_ERC_TO_NATIVE_ABI } = require('../../commons')
+const { uniformRetry, sleep } = require('../../e2e-commons/utils')
+const { setRequiredSignatures } = require('./utils')
 
 const homeWeb3 = new Web3(new Web3.providers.HttpProvider(homeRPC.URL))
 const foreignWeb3 = new Web3(new Web3.providers.HttpProvider(foreignRPC.URL))
@@ -14,12 +22,144 @@ const COMMON_FOREIGN_BRIDGE_ADDRESS = ercToNativeBridge.foreign
 const { toBN } = foreignWeb3.utils
 
 homeWeb3.eth.accounts.wallet.add(user.privateKey)
+homeWeb3.eth.accounts.wallet.add(validator.privateKey)
 foreignWeb3.eth.accounts.wallet.add(user.privateKey)
+foreignWeb3.eth.accounts.wallet.add(validator.privateKey)
 
 const erc20Token = new foreignWeb3.eth.Contract(ERC677_BRIDGE_TOKEN_ABI, ercToNativeBridge.foreignToken)
 const foreignBridge = new foreignWeb3.eth.Contract(FOREIGN_ERC_TO_NATIVE_ABI, COMMON_FOREIGN_BRIDGE_ADDRESS)
+const homeBridge = new homeWeb3.eth.Contract(HOME_ERC_TO_NATIVE_ABI, COMMON_HOME_BRIDGE_ADDRESS)
 
 describe('erc to native', () => {
+  let halfDuplexTokenAddress
+  let halfDuplexToken
+  before(async () => {
+    halfDuplexTokenAddress = await foreignBridge.methods.halfDuplexErc20token().call()
+    halfDuplexToken = new foreignWeb3.eth.Contract(ERC677_BRIDGE_TOKEN_ABI, halfDuplexTokenAddress)
+
+    // Set 2 required signatures for home bridge
+    await setRequiredSignatures({
+      bridgeContract: homeBridge,
+      web3: homeWeb3,
+      requiredSignatures: 2,
+      options: {
+        from: validator.address,
+        gas: '4000000'
+      }
+    })
+
+    // Set 2 required signatures for foreign bridge
+    await setRequiredSignatures({
+      bridgeContract: foreignBridge,
+      web3: foreignWeb3,
+      requiredSignatures: 2,
+      options: {
+        from: validator.address,
+        gas: '4000000'
+      }
+    })
+  })
+  it('should continue working after migration', async () => {
+    const originalBalanceOnHome = await homeWeb3.eth.getBalance(user.address)
+
+    const transferValue = homeWeb3.utils.toWei('0.01')
+
+    // erc20 token address and half duplex address are the same before migration
+    const tokenAddress = await foreignBridge.methods.erc20token().call()
+
+    const erc20AndhalfDuplexToken = new foreignWeb3.eth.Contract(ERC677_BRIDGE_TOKEN_ABI, tokenAddress)
+
+    // send tokens to foreign bridge
+    await erc20AndhalfDuplexToken.methods
+      .transfer(COMMON_FOREIGN_BRIDGE_ADDRESS, transferValue)
+      .send({
+        from: user.address,
+        gas: '1000000'
+      })
+      .catch(e => {
+        console.error(e)
+      })
+
+    // check that balance increases
+    await promiseRetry(async (retry, number) => {
+      const balance = await homeWeb3.eth.getBalance(user.address)
+      // retry at least 4 times to check transfer is not double processed by the two watchers
+      if (toBN(balance).lte(toBN(originalBalanceOnHome)) || number < 4) {
+        retry()
+      } else {
+        assert(
+          toBN(balance).eq(toBN(originalBalanceOnHome).add(toBN(transferValue))),
+          'User balance should be increased only by second transfer'
+        )
+      }
+    })
+
+    // call migration
+    await foreignBridge.methods.migrateToMCD().send({
+      from: validator.address,
+      gas: '4000000'
+    })
+
+    // update min threshold for swap
+    await foreignBridge.methods.setMinHDTokenBalance(foreignWeb3.utils.toWei('2', 'ether')).send({
+      from: validator.address,
+      gas: '1000000'
+    })
+
+    const AfterMigrateBalance = await homeWeb3.eth.getBalance(user.address)
+
+    // send tokens to foreign bridge
+    await erc20Token.methods
+      .transfer(COMMON_FOREIGN_BRIDGE_ADDRESS, transferValue)
+      .send({
+        from: user.address,
+        gas: '1000000'
+      })
+      .catch(e => {
+        console.error(e)
+      })
+
+    // check that balance increases
+    await promiseRetry(async (retry, number) => {
+      const balance = await homeWeb3.eth.getBalance(user.address)
+      // retry at least 4 times to check transfer is not double processed by the two watchers
+      if (toBN(balance).lte(toBN(AfterMigrateBalance)) || number < 4) {
+        retry()
+      } else {
+        assert(
+          toBN(balance).eq(toBN(AfterMigrateBalance).add(toBN(transferValue))),
+          'User balance should be increased only by second transfer'
+        )
+      }
+    })
+
+    const afterMigrateAndTransferBalance = await homeWeb3.eth.getBalance(user.address)
+
+    // send tokens to foreign bridge
+    await halfDuplexToken.methods
+      .transfer(COMMON_FOREIGN_BRIDGE_ADDRESS, transferValue)
+      .send({
+        from: user.address,
+        gas: '1000000'
+      })
+      .catch(e => {
+        console.error(e)
+      })
+
+    // check that balance increases
+    await promiseRetry(async (retry, number) => {
+      const balance = await homeWeb3.eth.getBalance(user.address)
+      // retry at least 4 times to check transfer is not double processed by the two watchers
+      if (toBN(balance).lte(toBN(afterMigrateAndTransferBalance)) || number < 4) {
+        retry()
+      } else {
+        assert(
+          toBN(balance).eq(toBN(afterMigrateAndTransferBalance).add(toBN(transferValue))),
+          'User balance should be increased only by second transfer'
+        )
+      }
+    })
+  })
   it('should convert tokens in foreign to coins in home', async () => {
     const balance = await erc20Token.methods.balanceOf(user.address).call()
     const originalBalanceOnHome = await homeWeb3.eth.getBalance(user.address)
@@ -48,12 +188,8 @@ describe('erc to native', () => {
         console.error(e)
       })
 
-    // Send a trivial transaction to generate a new block since the watcher
-    // is configured to wait 1 confirmation block
-    await generateNewBlock(foreignWeb3, user.address)
-
     // check that balance increases
-    await promiseRetry(async retry => {
+    await uniformRetry(async retry => {
       const balance = await homeWeb3.eth.getBalance(user.address)
       const secondUserbalance = await homeWeb3.eth.getBalance(secondUser.address)
       assert(toBN(balance).lte(toBN(originalBalanceOnHome)), 'User balance should be the same')
@@ -75,12 +211,8 @@ describe('erc to native', () => {
         console.error(e)
       })
 
-    // Send a trivial transaction to generate a new block since the watcher
-    // is configured to wait 1 confirmation block
-    await generateNewBlock(foreignWeb3, user.address)
-
     // check that balance increases
-    await promiseRetry(async retry => {
+    await uniformRetry(async retry => {
       const balance = await homeWeb3.eth.getBalance(user.address)
       if (toBN(balance).lte(toBN(originalBalanceOnHome))) {
         retry()
@@ -92,6 +224,223 @@ describe('erc to native', () => {
       }
     })
   })
+  it('should convert half duplex token in foreign to native token in home', async () => {
+    const originalBalanceOnHome = await homeWeb3.eth.getBalance(user.address)
+    const bridgeErc20TokenBalance = await erc20Token.methods.balanceOf(COMMON_FOREIGN_BRIDGE_ADDRESS).call()
+    const bridgeHalfDuplexBalance = await halfDuplexToken.methods.balanceOf(COMMON_FOREIGN_BRIDGE_ADDRESS).call()
+
+    const valueToTransfer = foreignWeb3.utils.toWei('1', 'ether')
+
+    // this transfer won't trigger a call to swap tokens
+    await halfDuplexToken.methods.transfer(COMMON_FOREIGN_BRIDGE_ADDRESS, valueToTransfer).send({
+      from: user.address,
+      gas: '1000000'
+    })
+
+    // check that balance increases
+    await uniformRetry(async retry => {
+      const balance = await homeWeb3.eth.getBalance(user.address)
+      if (toBN(balance).lte(toBN(originalBalanceOnHome))) {
+        retry()
+      } else {
+        assert(
+          toBN(balance).eq(toBN(originalBalanceOnHome).add(toBN(valueToTransfer))),
+          'User balance should be increased by the half duplex token transfer'
+        )
+      }
+    })
+
+    const updatedBalanceOnHome = await homeWeb3.eth.getBalance(user.address)
+    const updatedBridgeHalfDuplexBalance = await halfDuplexToken.methods.balanceOf(COMMON_FOREIGN_BRIDGE_ADDRESS).call()
+    assert(
+      toBN(updatedBridgeHalfDuplexBalance).eq(toBN(bridgeHalfDuplexBalance).add(toBN(valueToTransfer))),
+      'Bridge balance should reflect the transfer value'
+    )
+
+    // this transfer will trigger call to swap tokens
+    await halfDuplexToken.methods.transfer(COMMON_FOREIGN_BRIDGE_ADDRESS, valueToTransfer).send({
+      from: user.address,
+      gas: '1000000'
+    })
+
+    await sleep(2000)
+
+    await uniformRetry(async retry => {
+      const userBalance = await homeWeb3.eth.getBalance(user.address)
+      const updatedBridgeErc20TokenBalance = await erc20Token.methods.balanceOf(COMMON_FOREIGN_BRIDGE_ADDRESS).call()
+
+      if (
+        toBN(userBalance).lte(toBN(updatedBalanceOnHome)) ||
+        toBN(updatedBridgeErc20TokenBalance).lte(toBN(bridgeErc20TokenBalance))
+      ) {
+        retry()
+      } else {
+        assert(
+          toBN(userBalance).eq(toBN(updatedBalanceOnHome).add(toBN(valueToTransfer))),
+          'User balance should be increased by the half duplex token transfer'
+        )
+        const updatedBalance = await halfDuplexToken.methods.balanceOf(COMMON_FOREIGN_BRIDGE_ADDRESS).call()
+        assert(toBN(updatedBalance).isZero(), 'Half duplex bridge balance should be zero')
+        assert(
+          toBN(updatedBridgeErc20TokenBalance).eq(
+            toBN(bridgeErc20TokenBalance)
+              .add(toBN(bridgeHalfDuplexBalance))
+              .add(toBN(foreignWeb3.utils.toWei('2', 'ether')))
+          ),
+          'Erc20 token balance should be correctly increased by the token swap'
+        )
+      }
+    })
+  })
+  it('should convert half duplex token in foreign to native token in home for alternative receiver ', async () => {
+    const originalBalanceOnHome = await homeWeb3.eth.getBalance(user.address)
+    const initialBalanceSecondUser = await homeWeb3.eth.getBalance(secondUser.address)
+    const bridgeErc20TokenBalance = await erc20Token.methods.balanceOf(COMMON_FOREIGN_BRIDGE_ADDRESS).call()
+
+    const valueToTransfer = foreignWeb3.utils.toWei('1', 'ether')
+
+    // approve tokens to foreign bridge
+    await halfDuplexToken.methods
+      .approve(COMMON_FOREIGN_BRIDGE_ADDRESS, valueToTransfer)
+      .send({
+        from: user.address,
+        gas: '1000000'
+      })
+      .catch(e => {
+        console.error(e)
+      })
+
+    // call bridge method to transfer tokens to a different recipient
+    await foreignBridge.methods['relayTokens(address,uint256,address)'](
+      secondUser.address,
+      valueToTransfer,
+      halfDuplexTokenAddress
+    )
+      .send({
+        from: user.address,
+        gas: '1000000'
+      })
+      .catch(e => {
+        console.error(e)
+      })
+
+    // check that balance increases
+    await uniformRetry(async retry => {
+      const secondUserbalance = await homeWeb3.eth.getBalance(secondUser.address)
+      const updatedBridgeErc20TokenBalance = await erc20Token.methods.balanceOf(COMMON_FOREIGN_BRIDGE_ADDRESS).call()
+      const userbalance = await homeWeb3.eth.getBalance(user.address)
+      assert(toBN(userbalance).lte(toBN(originalBalanceOnHome)), 'User balance should be the same')
+      if (
+        toBN(secondUserbalance).lte(toBN(initialBalanceSecondUser)) ||
+        toBN(updatedBridgeErc20TokenBalance).lte(toBN(bridgeErc20TokenBalance))
+      ) {
+        retry()
+      } else {
+        assert(
+          toBN(secondUserbalance).eq(toBN(initialBalanceSecondUser).add(toBN(valueToTransfer))),
+          'User balance should be increased by the half duplex token transfer'
+        )
+        const updatedHDBalance = await halfDuplexToken.methods.balanceOf(COMMON_FOREIGN_BRIDGE_ADDRESS).call()
+        assert(toBN(updatedHDBalance).isZero(), 'Half duplex bridge balance should be zero')
+        assert(
+          toBN(updatedBridgeErc20TokenBalance).eq(toBN(bridgeErc20TokenBalance).add(toBN(valueToTransfer))),
+          'Erc20 token balance should be correctly increased by the token swap'
+        )
+      }
+    })
+  })
+  it('should not relay half duplex token transfer after Emergency Shutdown', async () => {
+    const originalBalanceOnHome = await homeWeb3.eth.getBalance(user.address)
+    const bridgeErc20TokenBalance = await erc20Token.methods.balanceOf(COMMON_FOREIGN_BRIDGE_ADDRESS).call()
+    const bridgeHalfDuplexBalance = await halfDuplexToken.methods.balanceOf(COMMON_FOREIGN_BRIDGE_ADDRESS).call()
+
+    const block = await foreignWeb3.eth.getBlock('latest')
+    const saiTop = new foreignWeb3.eth.Contract(SAI_TOP, ercToNativeBridge.saiTop)
+
+    // Trigger Emergency Shutdown
+    await saiTop.methods
+      .setCaged(block.timestamp)
+      .send({
+        from: user.address,
+        gas: '1000000'
+      })
+      .catch(e => {
+        console.error(e)
+      })
+
+    const valueToTransfer = foreignWeb3.utils.toWei('1', 'ether')
+
+    await sleep(2000)
+
+    // this transfer won't trigger a call to swap tokens
+    await halfDuplexToken.methods.transfer(COMMON_FOREIGN_BRIDGE_ADDRESS, valueToTransfer).send({
+      from: user.address,
+      gas: '1000000'
+    })
+
+    // check that transfer and swap are not processed in the next blocks.
+    await promiseRetry(async (retry, number) => {
+      const balanceOnHome = await homeWeb3.eth.getBalance(user.address)
+      const currentBridgeErc20TokenBalance = await erc20Token.methods.balanceOf(COMMON_FOREIGN_BRIDGE_ADDRESS).call()
+      const currentBridgeHalfDuplexBalance = await halfDuplexToken.methods
+        .balanceOf(COMMON_FOREIGN_BRIDGE_ADDRESS)
+        .call()
+
+      assert(toBN(balanceOnHome).eq(toBN(originalBalanceOnHome)), 'User balance should be the same')
+      assert(
+        toBN(currentBridgeHalfDuplexBalance).eq(toBN(bridgeHalfDuplexBalance).add(toBN(valueToTransfer))),
+        'Half duplex balance should be the value of transfer'
+      )
+      assert(toBN(currentBridgeErc20TokenBalance).eq(toBN(bridgeErc20TokenBalance)), 'erc20 balance should not change')
+
+      // after several retries, the state is corrects
+      if (number < 4) {
+        retry()
+      }
+    })
+
+    // let's undo the Emergency Shutdown to check that the oracle is still working
+    await saiTop.methods.setCaged('0').send({
+      from: user.address,
+      gas: '1000000'
+    })
+
+    const newValueToTransfer = foreignWeb3.utils.toWei('2', 'ether')
+
+    await halfDuplexToken.methods.transfer(COMMON_FOREIGN_BRIDGE_ADDRESS, newValueToTransfer).send({
+      from: user.address,
+      gas: '1000000'
+    })
+
+    await sleep(2000)
+
+    await uniformRetry(async retry => {
+      const userBalance = await homeWeb3.eth.getBalance(user.address)
+      const updatedBridgeErc20TokenBalance = await erc20Token.methods.balanceOf(COMMON_FOREIGN_BRIDGE_ADDRESS).call()
+
+      if (
+        toBN(userBalance).lte(toBN(originalBalanceOnHome)) ||
+        toBN(updatedBridgeErc20TokenBalance).lte(toBN(bridgeErc20TokenBalance))
+      ) {
+        retry()
+      } else {
+        assert(
+          toBN(userBalance).eq(toBN(originalBalanceOnHome).add(toBN(newValueToTransfer))),
+          'User balance should be increased by the half duplex token transfer'
+        )
+        const updatedHDBalance = await halfDuplexToken.methods.balanceOf(COMMON_FOREIGN_BRIDGE_ADDRESS).call()
+        assert(toBN(updatedHDBalance).isZero(), 'Half duplex bridge balance should be zero')
+        assert(
+          toBN(updatedBridgeErc20TokenBalance).eq(
+            toBN(bridgeErc20TokenBalance)
+              .add(toBN(valueToTransfer))
+              .add(toBN(newValueToTransfer))
+          ),
+          'Erc20 token balance should be correctly increased by the token swap'
+        )
+      }
+    })
+  })
   it('should convert coins in home to tokens in foreign', async () => {
     const originalBalance = await erc20Token.methods.balanceOf(user.address).call()
 
@@ -100,7 +449,7 @@ describe('erc to native', () => {
     assert(!toBN(balance).isZero(), 'Account should have tokens')
 
     // send transaction to home bridge
-    const depositTx = await homeWeb3.eth.sendTransaction({
+    await homeWeb3.eth.sendTransaction({
       from: user.address,
       to: COMMON_HOME_BRIDGE_ADDRESS,
       gasPrice: '1',
@@ -108,34 +457,217 @@ describe('erc to native', () => {
       value: homeWeb3.utils.toWei('0.01')
     })
 
-    // Send a trivial transaction to generate a new block since the watcher
-    // is configured to wait 1 confirmation block
-    await generateNewBlock(homeWeb3, user.address)
-
-    // The bridge should create a new transaction with a CollectedSignatures
-    // event so we generate another trivial transaction
-    await promiseRetry(
-      async retry => {
-        const lastBlockNumber = await homeWeb3.eth.getBlockNumber()
-        if (lastBlockNumber >= depositTx.blockNumber + 2) {
-          await generateNewBlock(homeWeb3, user.address)
-        } else {
-          retry()
-        }
-      },
-      {
-        forever: true,
-        factor: 1,
-        minTimeout: 500
-      }
-    )
-
     // check that balance increases
-    await promiseRetry(async retry => {
+    await uniformRetry(async retry => {
       const balance = await erc20Token.methods.balanceOf(user.address).call()
       if (toBN(balance).lte(toBN(originalBalance))) {
         retry()
       }
     })
   })
+  it('should not invest dai when chai token is disabled', async () => {
+    const bridgeDaiTokenBalance = await erc20Token.methods.balanceOf(COMMON_FOREIGN_BRIDGE_ADDRESS).call()
+
+    await foreignBridge.methods.setMinDaiTokenBalance(foreignWeb3.utils.toWei('2', 'ether')).send({
+      from: validator.address,
+      gas: '1000000'
+    }) // set min limit for automatic investment to 2*2 dai
+
+    const valueToTransfer = foreignWeb3.utils.toWei('5', 'ether')
+
+    // this transfer won't trigger a call to convert to chai
+    await erc20Token.methods.transfer(COMMON_FOREIGN_BRIDGE_ADDRESS, valueToTransfer).send({
+      from: user.address,
+      gas: '1000000'
+    })
+
+    await promiseRetry(async (retry, number) => {
+      if (number < 4) {
+        retry()
+      } else {
+        const updatedBridgeDaiTokenBalance = await erc20Token.methods.balanceOf(COMMON_FOREIGN_BRIDGE_ADDRESS).call()
+        assert(
+          toBN(bridgeDaiTokenBalance)
+            .add(toBN(valueToTransfer))
+            .eq(toBN(updatedBridgeDaiTokenBalance)),
+          'Dai tokens should not be when chai is disabled'
+        )
+      }
+    })
+  })
+  it('should invest dai after enough tokens are collected on bridge account', async () => {
+    await foreignBridge.methods.initializeChaiToken().send({
+      from: validator.address,
+      gas: '1000000'
+    }) // initialize chai token
+    await foreignBridge.methods.setMinDaiTokenBalance('0').send({
+      from: validator.address,
+      gas: '1000000'
+    }) // set investing limit to 0
+    await foreignBridge.methods.convertDaiToChai().send({
+      from: validator.address,
+      gas: '1000000'
+    }) // convert all existing dai tokens on bridge account to chai, in order to start from zero balance
+    await foreignBridge.methods.setMinDaiTokenBalance(foreignWeb3.utils.toWei('2', 'ether')).send({
+      from: validator.address,
+      gas: '1000000'
+    }) // set investing limit to 2 dai, automatically invest should happen after 4 dai
+
+    const valueToTransfer = foreignWeb3.utils.toWei('3', 'ether')
+
+    // this transfer won't trigger a call to convert to chai
+    await erc20Token.methods.transfer(COMMON_FOREIGN_BRIDGE_ADDRESS, valueToTransfer).send({
+      from: user.address,
+      gas: '1000000'
+    })
+
+    await promiseRetry(async (retry, number) => {
+      if (number < 4) {
+        retry()
+      } else {
+        const bridgeDaiTokenBalance = await erc20Token.methods.balanceOf(COMMON_FOREIGN_BRIDGE_ADDRESS).call()
+        assert(
+          valueToTransfer === bridgeDaiTokenBalance,
+          'Dai tokens should not be invested automatically before twice limit is reached'
+        )
+      }
+    })
+
+    // this transfer will trigger call to convert to chai
+    await erc20Token.methods.transfer(COMMON_FOREIGN_BRIDGE_ADDRESS, valueToTransfer).send({
+      from: user.address,
+      gas: '1000000'
+    })
+
+    await promiseRetry(async retry => {
+      const updatedBalance = await erc20Token.methods.balanceOf(COMMON_FOREIGN_BRIDGE_ADDRESS).call()
+      if (toBN(updatedBalance).gte(toBN(valueToTransfer).add(toBN(valueToTransfer)))) {
+        retry()
+      } else {
+        const updatedBalance = await erc20Token.methods.balanceOf(COMMON_FOREIGN_BRIDGE_ADDRESS).call()
+        assert(
+          toBN(updatedBalance).eq(toBN(foreignWeb3.utils.toWei('2', 'ether'))),
+          'Dai bridge balance should be equal to limit'
+        )
+      }
+    })
+  })
+
+  describe('handling of chai swaps', async () => {
+    before(async () => {
+      // Next tests check validator nonces, this will force every validator to submit signature/affirmation
+      // Set 3 required signatures for home bridge
+      await setRequiredSignatures({
+        bridgeContract: homeBridge,
+        web3: homeWeb3,
+        requiredSignatures: 3,
+        options: {
+          from: validator.address,
+          gas: '4000000'
+        }
+      })
+
+      // Set 3 required signatures for foreign bridge
+      await setRequiredSignatures({
+        bridgeContract: foreignBridge,
+        web3: foreignWeb3,
+        requiredSignatures: 3,
+        options: {
+          from: validator.address,
+          gas: '4000000'
+        }
+      })
+    })
+
+    it('should not handle transfer event in paying interest', async () => {
+      await foreignBridge.methods.setInterestReceiver(user.address).send({
+        from: validator.address,
+        gas: '1000000'
+      })
+      const initialNonce = await homeWeb3.eth.getTransactionCount(validator.address)
+      await foreignBridge.methods.payInterest().send({
+        from: user.address,
+        gas: '1000000'
+      })
+
+      await promiseRetry(async (retry, number) => {
+        if (number < 6) {
+          retry()
+        } else {
+          const nonce = await homeWeb3.eth.getTransactionCount(validator.address)
+          assert(
+            nonce === initialNonce,
+            'Validator should not process transfer event originated during converting Chai => Dai'
+          )
+        }
+      })
+    })
+
+    it('should not handle chai withdrawal transfer event in executeSignatures as a regular transfer', async () => {
+      await foreignBridge.methods.setMinDaiTokenBalance('0').send({
+        from: validator.address,
+        gas: '1000000'
+      }) // set investing limit to 0
+      await foreignBridge.methods.convertDaiToChai().send({
+        from: validator.address,
+        gas: '1000000'
+      }) // convert all existing dai tokens on bridge account to chai, in order to start from zero balance
+
+      const initialNonce = await homeWeb3.eth.getTransactionCount(validator.address)
+
+      const originalBalance = await erc20Token.methods.balanceOf(user.address).call()
+      // send transaction to home bridge
+      await homeWeb3.eth.sendTransaction({
+        from: user.address,
+        to: COMMON_HOME_BRIDGE_ADDRESS,
+        gasPrice: '1',
+        gas: '1000000',
+        value: homeWeb3.utils.toWei('0.01')
+      })
+
+      // check that balance increases
+      await uniformRetry(async retry => {
+        const balance = await erc20Token.methods.balanceOf(user.address).call()
+        if (toBN(balance).lte(toBN(originalBalance))) {
+          retry()
+        }
+      })
+
+      await promiseRetry(async (retry, number) => {
+        if (number < 6) {
+          retry()
+        } else {
+          const nonce = await homeWeb3.eth.getTransactionCount(validator.address)
+          assert(
+            nonce === initialNonce + 1,
+            'Validator should not process transfer event originated during converting Chai => Dai'
+          )
+        }
+      })
+    })
+
+    after(async () => {
+      // Set 2 required signatures for home bridge
+      await setRequiredSignatures({
+        bridgeContract: homeBridge,
+        web3: homeWeb3,
+        requiredSignatures: 2,
+        options: {
+          from: validator.address,
+          gas: '4000000'
+        }
+      })
+
+      // Set 2 required signatures for foreign bridge
+      await setRequiredSignatures({
+        bridgeContract: foreignBridge,
+        web3: foreignWeb3,
+        requiredSignatures: 2,
+        options: {
+          from: validator.address,
+          gas: '4000000'
+        }
+      })
+    })
+  })
 })

oracle-e2e/test/mocha.opts

@@ -1 +1 @@
---timeout 30000
+--timeout 120000

oracle-e2e/test/nativeToErc.js

@@ -1,16 +1,20 @@
 const Web3 = require('web3')
 const assert = require('assert')
-const promiseRetry = require('promise-retry')
 const {
   user,
   validator,
+  secondValidator,
+  thirdValidator,
   nativeToErcBridge,
   secondUser,
+  thirdUser,
+  fourthUser,
   homeRPC,
   foreignRPC
 } = require('../../e2e-commons/constants.json')
-const { ERC677_BRIDGE_TOKEN_ABI } = require('../../commons')
-const { generateNewBlock } = require('../../e2e-commons/utils')
+const { ERC677_BRIDGE_TOKEN_ABI, HOME_NATIVE_TO_ERC_ABI, FOREIGN_NATIVE_TO_ERC_ABI } = require('../../commons')
+const { uniformRetry, sleep } = require('../../e2e-commons/utils')
+const { setRequiredSignatures } = require('./utils')
 
 const homeWeb3 = new Web3(new Web3.providers.HttpProvider(homeRPC.URL))
 const foreignWeb3 = new Web3(new Web3.providers.HttpProvider(foreignRPC.URL))
@@ -19,25 +23,58 @@ const { toBN } = foreignWeb3.utils
 const COMMON_HOME_BRIDGE_ADDRESS = nativeToErcBridge.home
 const COMMON_FOREIGN_BRIDGE_ADDRESS = nativeToErcBridge.foreign
 
+const validatorAddresses = [validator.address, secondValidator.address, thirdValidator.address]
+
 homeWeb3.eth.accounts.wallet.add(user.privateKey)
 homeWeb3.eth.accounts.wallet.add(validator.privateKey)
 homeWeb3.eth.accounts.wallet.add(secondUser.privateKey)
+homeWeb3.eth.accounts.wallet.add(secondValidator.privateKey)
+homeWeb3.eth.accounts.wallet.add(thirdValidator.privateKey)
+homeWeb3.eth.accounts.wallet.add(thirdUser.privateKey)
+homeWeb3.eth.accounts.wallet.add(fourthUser.privateKey)
 foreignWeb3.eth.accounts.wallet.add(user.privateKey)
 foreignWeb3.eth.accounts.wallet.add(validator.privateKey)
 foreignWeb3.eth.accounts.wallet.add(secondUser.privateKey)
+foreignWeb3.eth.accounts.wallet.add(secondValidator.privateKey)
+foreignWeb3.eth.accounts.wallet.add(thirdValidator.privateKey)
+foreignWeb3.eth.accounts.wallet.add(thirdUser.privateKey)
+foreignWeb3.eth.accounts.wallet.add(fourthUser.privateKey)
 
 const token = new foreignWeb3.eth.Contract(ERC677_BRIDGE_TOKEN_ABI, nativeToErcBridge.foreignToken)
-
-const sleep = timeout => new Promise(res => setTimeout(res, timeout))
+const homeBridge = new homeWeb3.eth.Contract(HOME_NATIVE_TO_ERC_ABI, COMMON_HOME_BRIDGE_ADDRESS)
+const foreignBridge = new foreignWeb3.eth.Contract(FOREIGN_NATIVE_TO_ERC_ABI, COMMON_FOREIGN_BRIDGE_ADDRESS)
 
 describe('native to erc', () => {
+  before(async () => {
+    // Set 2 required signatures for home bridge
+    await setRequiredSignatures({
+      bridgeContract: homeBridge,
+      web3: homeWeb3,
+      requiredSignatures: 2,
+      options: {
+        from: validator.address,
+        gas: '4000000'
+      }
+    })
+
+    // Set 2 required signatures for foreign bridge
+    await setRequiredSignatures({
+      bridgeContract: foreignBridge,
+      web3: foreignWeb3,
+      requiredSignatures: 2,
+      options: {
+        from: validator.address,
+        gas: '4000000'
+      }
+    })
+  })
   it('should convert eth in home to tokens in foreign', async () => {
     // check that account has zero tokens in the foreign chain
     const balance = await token.methods.balanceOf(user.address).call()
     assert(toBN(balance).isZero(), 'Account should not have tokens yet')
 
     // send transaction to home chain
-    const depositTx = await homeWeb3.eth.sendTransaction({
+    await homeWeb3.eth.sendTransaction({
       from: user.address,
       to: COMMON_HOME_BRIDGE_ADDRESS,
       gasPrice: '1',
@@ -45,30 +82,8 @@ describe('native to erc', () => {
       value: '1000000000000000000'
     })
 
-    // Send a trivial transaction to generate a new block since the watcher
-    // is configured to wait 1 confirmation block
-    await generateNewBlock(homeWeb3, user.address)
-
-    // The bridge should create a new transaction with a CollectedSignatures
-    // event so we generate another trivial transaction
-    await promiseRetry(
-      async retry => {
-        const lastBlockNumber = await homeWeb3.eth.getBlockNumber()
-        if (lastBlockNumber >= depositTx.blockNumber + 2) {
-          await generateNewBlock(homeWeb3, user.address)
-        } else {
-          retry()
-        }
-      },
-      {
-        forever: true,
-        factor: 1,
-        minTimeout: 500
-      }
-    )
-
     // check that account has tokens in the foreign chain
-    await promiseRetry(async retry => {
+    await uniformRetry(async retry => {
       const balance = await token.methods.balanceOf(user.address).call()
       if (toBN(balance).isZero()) {
         retry()
@@ -90,12 +105,8 @@ describe('native to erc', () => {
         console.error(e)
       })
 
-    // Send a trivial transaction to generate a new block since the watcher
-    // is configured to wait 1 confirmation block
-    await generateNewBlock(foreignWeb3, user.address)
-
     // check that balance increases
-    await promiseRetry(async retry => {
+    await uniformRetry(async retry => {
       const balance = await homeWeb3.eth.getBalance(user.address)
       if (toBN(balance).lte(toBN(originalBalance))) {
         retry()
@@ -109,9 +120,12 @@ describe('native to erc', () => {
 
     // empty validator funds
     await sendAllBalance(homeWeb3, validator.address, secondUser.address)
+    await sendAllBalance(homeWeb3, secondValidator.address, thirdUser.address)
+    await sendAllBalance(homeWeb3, thirdValidator.address, fourthUser.address)
 
+    const nonces = await Promise.all(validatorAddresses.map(homeWeb3.eth.getTransactionCount))
     // send transaction to home chain
-    const depositTx = await homeWeb3.eth.sendTransaction({
+    await homeWeb3.eth.sendTransaction({
       from: user.address,
       to: COMMON_HOME_BRIDGE_ADDRESS,
       gasPrice: '1',
@@ -119,39 +133,20 @@ describe('native to erc', () => {
       value: '1000000000000000000'
     })
 
-    // Send a Tx to generate a new block
-    await generateNewBlock(homeWeb3, user.address)
-
     // wait two seconds, no new blocks should have been generated
     await sleep(2000)
-    const lastBlockNumber = await homeWeb3.eth.getBlockNumber()
+    const newNonces = await Promise.all(validatorAddresses.map(homeWeb3.eth.getTransactionCount))
     const balance = toBN(await token.methods.balanceOf(user.address).call())
-    assert(lastBlockNumber === depositTx.blockNumber + 1, "Shouldn't have emitted a new block")
+    assert.deepStrictEqual(nonces, newNonces, "Shouldn't sent new tx")
     assert(originalBalance.eq(balance), "Token balance shouldn't have changed")
 
     // send funds back to validator
-    const sendBalanceBackTx = await sendAllBalance(homeWeb3, secondUser.address, validator.address)
-
-    // expect Deposit event to be processed
-    await promiseRetry(
-      async retry => {
-        const lastBlockNumber = await homeWeb3.eth.getBlockNumber()
-        // check that a new block was created since the last transaction
-        if (lastBlockNumber === sendBalanceBackTx.blockNumber + 1) {
-          await generateNewBlock(homeWeb3, user.address)
-        } else {
-          retry()
-        }
-      },
-      {
-        forever: true,
-        factor: 1,
-        minTimeout: 500
-      }
-    )
+    await sendAllBalance(homeWeb3, secondUser.address, validator.address)
+    await sendAllBalance(homeWeb3, thirdUser.address, secondValidator.address)
+    await sendAllBalance(homeWeb3, fourthUser.address, thirdValidator.address)
 
     // check that token balance was incremented in foreign chain
-    await promiseRetry(async retry => {
+    await uniformRetry(async retry => {
       const balance = toBN(await token.methods.balanceOf(user.address).call())
       if (!balance.gt(originalBalance)) {
         retry()
@@ -165,7 +160,9 @@ describe('native to erc', () => {
 
     // empty foreign validator funds
     await sendAllBalance(foreignWeb3, validator.address, secondUser.address)
-    const foreignBlockNumber = await foreignWeb3.eth.getBlockNumber()
+    await sendAllBalance(foreignWeb3, secondValidator.address, thirdUser.address)
+    await sendAllBalance(foreignWeb3, thirdValidator.address, fourthUser.address)
+    const nonces = await Promise.all(validatorAddresses.map(foreignWeb3.eth.getTransactionCount))
 
     // send transaction to home chain
     await homeWeb3.eth.sendTransaction({
@@ -176,36 +173,18 @@ describe('native to erc', () => {
       value: '1000000000000000000'
     })
 
-    // Send a Tx to generate a new block
-    const lastHomeTx = await generateNewBlock(homeWeb3, user.address)
-
-    // wait for the deposit to be processed
-    await promiseRetry(
-      async retry => {
-        const lastBlockNumber = await homeWeb3.eth.getBlockNumber()
-        if (lastBlockNumber === lastHomeTx.blockNumber + 1) {
-          await generateNewBlock(homeWeb3, user.address)
-        } else {
-          retry()
-        }
-      },
-      {
-        forever: true,
-        factor: 1,
-        minTimeout: 500
-      }
-    )
-
     // tokens shouldn't be generated in the foreign chain because the validator doesn't have funds
     await sleep(2000)
-    const lastForeignBlockNumber = await foreignWeb3.eth.getBlockNumber()
-    assert(lastForeignBlockNumber === foreignBlockNumber, "Shouldn't have emitted a new block")
+    const newNonces = await Promise.all(validatorAddresses.map(foreignWeb3.eth.getTransactionCount))
+    assert.deepStrictEqual(nonces, newNonces, "Shouldn't sent new tx")
 
     // send funds back to validator
     await sendAllBalance(foreignWeb3, secondUser.address, validator.address)
+    await sendAllBalance(foreignWeb3, thirdUser.address, secondValidator.address)
+    await sendAllBalance(foreignWeb3, fourthUser.address, thirdValidator.address)
 
     // check that account has tokens in the foreign chain
-    await promiseRetry(async retry => {
+    await uniformRetry(async retry => {
       const balance = toBN(await token.methods.balanceOf(user.address).call())
       if (balance.eq(originalBalance)) {
         retry()

oracle-e2e/test/utils.js

@@ -0,0 +1,12 @@
+const { BRIDGE_VALIDATORS_ABI } = require('../../commons')
+
+const setRequiredSignatures = async ({ bridgeContract, web3, requiredSignatures, options }) => {
+  const validatorAddress = await bridgeContract.methods.validatorContract().call()
+  const validatorContract = new web3.eth.Contract(BRIDGE_VALIDATORS_ABI, validatorAddress)
+
+  return validatorContract.methods.setRequiredSignatures(requiredSignatures).send(options)
+}
+
+module.exports = {
+  setRequiredSignatures
+}

oracle/Dockerfile

@@ -22,8 +22,6 @@ RUN mv ./contracts/build ./ && rm -rf ./contracts/* ./contracts/.[!.]* && mv ./b
 COPY ./commons ./commons
 
 COPY ./oracle ./oracle
-ARG DOT_ENV_PATH=./oracle/.env
-COPY ${DOT_ENV_PATH} ./oracle/.env
 
 WORKDIR /mono/oracle
 CMD echo "To start a bridge process run:" \

oracle/README.md

@@ -117,8 +117,18 @@ There are two options to run the TokenBridge processes:
 
 ### Docker 
 
-  - While running the bridge containers for the first time use `ORACLE_VALIDATOR_ADDRESS=<validator address> ORACLE_VALIDATOR_ADDRESS_PRIVATE_KEY=<validator address private key> docker-compose up -d --build` 
-  - For further launches use `ORACLE_VALIDATOR_ADDRESS=<validator address>  ORACLE_VALIDATOR_ADDRESS_PRIVATE_KEY=<validator address private key> docker-compose  up  --detach`
+  - While running the bridge containers for the first time use
+    ```
+    env ORACLE_VALIDATOR_ADDRESS=<validator address> \
+      env ORACLE_VALIDATOR_ADDRESS_PRIVATE_KEY=<validator address private key> \
+      docker-compose -f docker-compose-build.yml -f docker-compose.yml up -d --build
+    ``` 
+  - For further launches (or in case of usage an official docker image) use
+    ```
+    env ORACLE_VALIDATOR_ADDRESS=<validator address> \
+      env ORACLE_VALIDATOR_ADDRESS_PRIVATE_KEY=<validator address private key> \
+      docker-compose up --d
+    ```
 
 All [watcher](#watcher) & [sender](#sender) services launch when `docker-compose` is called. 
 
@@ -144,6 +154,18 @@ In case you need to reset your bridge or setup a new one (with different configu
 
 See the [UI instructions](../ui/README.md) to configure and use the optional Bridge UI.
 
+### Build the image without running the oracle
+
+To build the image change the directory:
+```
+cd oracle
+```
+
+And run the docker composer:
+```
+docker-compose -f docker-compose-build.yml build
+``` 
+
 ## Rollback the Last Processed Block in Redis
 
 If the bridge does not handle an event properly (i.e. a transaction stalls due to a low gas price), the Redis DB can be rolled back. You must identify which watcher needs to re-run. For example, if the validator signatures were collected but the transaction with signatures was not sent to the Foreign network, the `collected-signatures` watcher must look at the block where the corresponding `CollectedSignatures` event was raised.

oracle/config/convert-to-chai-worker.config.js

@@ -0,0 +1,20 @@
+const baseConfig = require('./base.config')
+const { EXIT_CODES } = require('../src/utils/constants')
+
+const id = `${baseConfig.id}-convert-to-chai`
+
+const workerRequired = baseConfig.id === 'erc-native'
+
+if (!workerRequired) {
+  console.error(`Convert to chai tokens worker not required for bridge mode ${process.env.ORACLE_BRIDGE_MODE}`)
+  process.exit(EXIT_CODES.WATCHER_NOT_REQUIRED)
+}
+
+module.exports = {
+  ...baseConfig.bridgeConfig,
+  ...baseConfig.foreignConfig,
+  workerQueue: 'convert-to-chai',
+  senderQueue: 'foreign',
+  name: `worker-${id}`,
+  id
+}

oracle/config/half-duplex-transfer-watcher.config.js

@@ -0,0 +1,39 @@
+const baseConfig = require('./base.config')
+const { ERC20_ABI } = require('../../commons')
+const { EXIT_CODES } = require('../src/utils/constants')
+
+const initialChecksJson = process.argv[3]
+
+if (!initialChecksJson) {
+  throw new Error('initial check parameter was not provided.')
+}
+
+let initialChecks
+try {
+  initialChecks = JSON.parse(initialChecksJson)
+} catch (e) {
+  throw new Error('Error on decoding values from initial checks.')
+}
+
+const id = `${baseConfig.id}-half-duplex-transfer`
+
+const transferWatcherRequired = baseConfig.id === 'erc-native'
+
+if (!transferWatcherRequired) {
+  console.error(`Transfer watcher not required for bridge mode ${process.env.ORACLE_BRIDGE_MODE}`)
+  process.exit(EXIT_CODES.WATCHER_NOT_REQUIRED)
+}
+
+module.exports = {
+  ...baseConfig.bridgeConfig,
+  ...baseConfig.foreignConfig,
+  event: 'Transfer',
+  eventContractAddress: initialChecks.halfDuplexTokenAddress,
+  eventAbi: ERC20_ABI,
+  eventFilter: { to: process.env.COMMON_FOREIGN_BRIDGE_ADDRESS },
+  queue: 'home',
+  workerQueue: 'swap-tokens',
+  name: `watcher-${id}`,
+  id,
+  idle: initialChecks.idle
+}

oracle/config/swap-tokens-worker.config.js

@@ -0,0 +1,20 @@
+const baseConfig = require('./base.config')
+const { EXIT_CODES } = require('../src/utils/constants')
+
+const id = `${baseConfig.id}-swap-tokens`
+
+const workerRequired = baseConfig.id === 'erc-native'
+
+if (!workerRequired) {
+  console.error(`Swap tokens worker not required for bridge mode ${process.env.ORACLE_BRIDGE_MODE}`)
+  process.exit(EXIT_CODES.WATCHER_NOT_REQUIRED)
+}
+
+module.exports = {
+  ...baseConfig.bridgeConfig,
+  ...baseConfig.foreignConfig,
+  workerQueue: 'swap-tokens',
+  senderQueue: 'foreign',
+  name: `worker-${id}`,
+  id
+}

oracle/config/transfer-watcher.config.js

@@ -29,6 +29,11 @@ if (!transferWatcherRequired) {
   process.exit(EXIT_CODES.WATCHER_NOT_REQUIRED)
 }
 
+const workerQueueConfig = {}
+if (baseConfig.id === 'erc-native') {
+  workerQueueConfig.workerQueue = 'convert-to-chai'
+}
+
 module.exports = {
   ...baseConfig.bridgeConfig,
   ...baseConfig.foreignConfig,
@@ -37,6 +42,7 @@ module.exports = {
   eventAbi: ERC20_ABI,
   eventFilter: { to: process.env.COMMON_FOREIGN_BRIDGE_ADDRESS },
   queue: 'home',
+  ...workerQueueConfig,
   name: `watcher-${id}`,
   id
 }

oracle/docker-compose-build.yml

@@ -0,0 +1,6 @@
+---
+version: '2.4'
+services:
+  oracle:
+    image: poanetwork/tokenbridge-oracle
+    build: .

oracle/docker-compose-erc-native.yml

@@ -0,0 +1,138 @@
+---
+version: '2.4'
+services:
+  rabbit:
+    extends:
+      file: docker-compose.yml
+      service: rabbit
+    networks:
+      - net_rabbit_bridge_transfer
+      - net_rabbit_bridge_half_duplex_transfer
+      - net_rabbit_bridge_swap_tokens_worker
+      - net_rabbit_bridge_convert_to_chai_worker
+  redis:
+    extends:
+      file: docker-compose.yml
+      service: redis
+    networks:
+      - net_db_bridge_transfer
+      - net_db_bridge_half_duplex_transfer
+  bridge_request:
+    extends:
+      file: docker-compose.yml
+      service: bridge_request
+    networks:
+      - net_db_bridge_request
+      - net_rabbit_bridge_request
+  bridge_collected:
+    extends:
+      file: docker-compose.yml
+      service: bridge_collected
+    networks:
+      - net_db_bridge_request
+      - net_rabbit_bridge_request
+  bridge_affirmation:
+    extends:
+      file: docker-compose.yml
+      service: bridge_affirmation
+    networks:
+      - net_db_bridge_request
+      - net_rabbit_bridge_request
+  bridge_transfer:
+    cpus: 0.1
+    mem_limit: 500m
+    image: poanetwork/tokenbridge-oracle:latest
+    env_file: ./.env
+    environment:
+      - NODE_ENV=production
+      - ORACLE_VALIDATOR_ADDRESS=${ORACLE_VALIDATOR_ADDRESS}
+    restart: unless-stopped
+    entrypoint: yarn watcher:transfer
+    networks:
+      - net_db_bridge_transfer
+      - net_rabbit_bridge_transfer
+  bridge_half_duplex_transfer:
+    cpus: 0.1
+    mem_limit: 500m
+    image: poanetwork/tokenbridge-oracle:latest
+    env_file: ./.env
+    environment:
+      - NODE_ENV=production
+      - ORACLE_VALIDATOR_ADDRESS=${ORACLE_VALIDATOR_ADDRESS}
+    restart: unless-stopped
+    entrypoint: yarn watcher:half-duplex-transfer
+    networks:
+      - net_db_bridge_half_duplex_transfer
+      - net_rabbit_bridge_half_duplex_transfer
+  bridge_swap_tokens_worker:
+    cpus: 0.1
+    mem_limit: 500m
+    image: poanetwork/tokenbridge-oracle:latest
+    env_file: ./.env
+    environment:
+      - NODE_ENV=production
+      - ORACLE_VALIDATOR_ADDRESS=${ORACLE_VALIDATOR_ADDRESS}
+    restart: unless-stopped
+    entrypoint: yarn worker:swap-tokens
+    networks:
+      - net_rabbit_bridge_swap_tokens_worker
+  bridge_convert_to_chai_worker:
+    cpus: 0.1
+    mem_limit: 500m
+    image: poanetwork/tokenbridge-oracle:latest
+    env_file: ./.env
+    environment:
+      - NODE_ENV=production
+      - ORACLE_VALIDATOR_ADDRESS=${ORACLE_VALIDATOR_ADDRESS}
+    restart: unless-stopped
+    entrypoint: yarn worker:convert-to-chai
+    networks:
+      - net_rabbit_bridge_convert_to_chai_worker
+  bridge_senderhome:
+    extends:
+      file: docker-compose.yml
+      service: bridge_senderhome
+    networks:
+      - net_db_bridge_request
+      - net_rabbit_bridge_request
+  bridge_senderforeign:
+    extends:
+      file: docker-compose.yml
+      service: bridge_senderforeign
+    networks:
+      - net_db_bridge_request
+      - net_rabbit_bridge_request
+
+networks:
+  net_db_bridge_request:
+    driver: bridge
+  net_db_bridge_collected:
+    driver: bridge
+  net_db_bridge_affirmation:
+    driver: bridge
+  net_db_bridge_transfer:
+    driver: bridge
+  net_db_bridge_half_duplex_transfer:
+    driver: bridge
+  net_db_bridge_senderhome:
+    driver: bridge
+  net_db_bridge_senderforeign:
+    driver: bridge
+  net_rabbit_bridge_request:
+    driver: bridge
+  net_rabbit_bridge_collected:
+    driver: bridge
+  net_rabbit_bridge_affirmation:
+    driver: bridge
+  net_rabbit_bridge_transfer:
+    driver: bridge
+  net_rabbit_bridge_half_duplex_transfer:
+    driver: bridge
+  net_rabbit_bridge_swap_tokens_worker:
+    driver: bridge
+  net_rabbit_bridge_senderhome:
+    driver: bridge
+  net_rabbit_bridge_senderforeign:
+    driver: bridge
+  net_rabbit_bridge_convert_to_chai_worker:
+    driver: bridge

oracle/docker-compose-transfer.yml

@@ -37,9 +37,7 @@ services:
   bridge_transfer:
     cpus: 0.1
     mem_limit: 500m
-    build:
-      context: ..
-      dockerfile: oracle/Dockerfile
+    image: poanetwork/tokenbridge-oracle:latest
     env_file: ./.env
     environment:
       - NODE_ENV=production

oracle/docker-compose.yml

@@ -32,9 +32,7 @@ services:
   bridge_request:
     cpus: 0.1
     mem_limit: 500m
-    build:
-      context: ..
-      dockerfile: oracle/Dockerfile
+    image: poanetwork/tokenbridge-oracle:latest
     env_file: ./.env
     environment: 
       - NODE_ENV=production 
@@ -47,9 +45,7 @@ services:
   bridge_collected:
     cpus: 0.1
     mem_limit: 500m
-    build:
-      context: ..
-      dockerfile: oracle/Dockerfile
+    image: poanetwork/tokenbridge-oracle:latest
     env_file: ./.env
     environment: 
       - NODE_ENV=production 
@@ -62,9 +58,7 @@ services:
   bridge_affirmation:
     cpus: 0.1
     mem_limit: 500m
-    build:
-      context: ..
-      dockerfile: oracle/Dockerfile
+    image: poanetwork/tokenbridge-oracle:latest
     env_file: ./.env
     environment: 
       - NODE_ENV=production 
@@ -77,9 +71,7 @@ services:
   bridge_senderhome:
     cpus: 0.1
     mem_limit: 500m
-    build:
-      context: ..
-      dockerfile: oracle/Dockerfile
+    image: poanetwork/tokenbridge-oracle:latest
     env_file: ./.env
     environment: 
       - NODE_ENV=production 
@@ -92,9 +84,7 @@ services:
   bridge_senderforeign:
     cpus: 0.1
     mem_limit: 500m
-    build:
-      context: ..
-      dockerfile: oracle/Dockerfile
+    image: poanetwork/tokenbridge-oracle:latest
     env_file: ./.env
     environment: 
       - NODE_ENV=production